ACTA ASTRONOMICA
Vol. 44 (1994) pp. 141–164
Correction and Analysis of Daily Solar Flux
at 127 MHz as Measured at Toruń, 1958 – 1992
by
Grażyna Gawrońska,
Kazimierz M. Borkowski, and
Jerzy B. Usowicz
Toruń Radio Astronomy Observatory, Nicolaus Copernicus University,
ul. Chopina 12/18, PL-87-100 Toruń, Poland
Received October 18, 1993
|
ABSTRACT
A collection of daily means over 34 years of single frequency radio
observations of the Sun has now been corrected to form a uniform data base.
The aim of this report is to present these data in the form of tables.
A short description of the observations and detailed corrections of
earlier reported data are given. A preliminary statistical and spectral
analysis of the entire data set is also included. |
1. Introduction
The results presented in this paper come from solar radio patrol observations
carried out at 127 MHz since October 1958 at the Toruń Radio Astronomy
Observatory, located in the village of Piwnice, some 15 km north of
Toruń. The geographical coordinates of the site are
53.10°N and 18.55°E.
Until August 1960 the observations were performed with a 12-m
paraboloidal antenna and a simple total power receiver. Since then an
E-W adding interferometer of approximately 10 wavelength baseline and
a switched receiver (Dicke type) are used for this purpose. Initially,
the two identical antennas were parabolic cylinders, which in 1972 were
replaced by antennas with flat reflectors. In the same time the old
receiver was replaced with similar one but based on semiconductor devices.
The receiver output is recorded on a paper chart.
This system is described in detail by Borkowski et al. (1975) and
Borkowski (1982b).
Detailed account of observations and data reduction
procedures can be found in Borkowski (1976). Briefly: An observing
day usually covers about 7 hours around the local noon, i.e. from
0700 or 0800 to 1400 or 1500 UT. Daily records consist of 16
(in winter) to 18 (in summer)
interference fringes with maxima spaced from 23 minutes at noon to
45 minutes near sunrise/sunset. Solar flux was measured at each of
the maxima and then the values between 0900 and 1500 UT were averaged
to give the reported daily means. Conversion of measured heights of
the fringes into the flux density units is done by reference to the fading
flux of Cassiopeia A (Cas A) radio source (through
periodical observations of this source) accounting for receiver nonlinearity,
actual receiver gain and antenna power pattern. Also, the so called
variability index is estimated by visual inspection of the daily
records. Data on the outstanding events are extracted
from the records to be reported in a separate table. In this
work we shall limit ourselves to presentation and analysis of
the daily mean flux densities only.
This long data series has, unfortunately, numerous gaps due to equipment
malfunction, human weakness, replacement of the apparatus etc. Nevertheless,
due to its relatively large time span and low frequency of observations,
the collected material is undoubtedly unique in the world, and thus worth
presenting to the scientific community. Since, over the years, there were
differences in various assumptions for data reduction, the available material
(as published e.g. in the Quarterly Bulletin on Solar Activity )
is not uniform.
Moreover, the published data, besides having additional gaps due to
late delivery of results, are rounded
off to integers of solar flux units (1 s.f.u. =
10–22
Wm–2Hz–1)
which, at this low frequency and for conditions of the quiet Sun, leads to
smoothing out of any variability on scales smaller than about 15 % of
the total flux.
We thus set out to correct all the past data for known factors and collect
them in a single data base without excessive rounding off. Results of
our effort constitute the main body of this article, to which we add
a few statistical and spectral analyses.
2. Correcting observational data
Earlier careful analyses of observation and data reduction methodology
(Borkowski 1981a, 1981b, 1982a) revealed that the solar flux densities
reported from our observing station were always underestimated by 20 to 30 %.
This was due to the neglecting or variability inherent in a few small but
important factors, such as an interference of the source Cygnus A
(Cyg A) while observing Cas A, the visibility of the solar disc
for our interferometer, the attenuation by ionosphere, the stepwise setting
of antenna elevation, the ellipticity of the Earth's orbit (1 AU
adjustment) or the decay of Cas A flux. Now we shall present some details
concerning the correction factors introduced by us for the purpose of this work.
Beginning with observations of August 1980 to calibrate the flux density scale
of our system we have used Baars et al. (1977)
results for the decreasing flux of Cas A, which at 127 MHz reduce to:
|
SCas A
= 1.5466·(0.9876)t–1965
[s.f.u.], |
| (1) |
where t is the epoch in years (see also Borkowski et al. 1980).
This formula is assumed to be valid throughout the entire span of our data.
It gives e.g. 1.67 and 1.104 .f.u.
for the years 1959 and 1992, respectively. Taking into account values
actually used in the past one finds that the results for the years
1958 to 1980 must be corrected by the following factors:
1.118, 1.104, 1.091, 1.077, 1.064, 1.051, 1.038, 1.025, 1.012, 0.999,
0.987, 0.975, 0.963, 0.951, 0.843, 0.834, 0.824 (0.946), 0.946,
0.946, 0.946, 0.946, 0.946, 0.946,
(respectively). These factors were calculated for the middle of each
year, with the sole exception of 1974, for which the number given in brackets
refers to the second half of 1974. The last factor, for 1980, applies to
the period January through July only.
The factor resulting from the ionospheric attenuation of radio waves has been
estimated for the location of our station basing on published measurements
at different latitudes and seasons. The night-time attenuation of the
Cas A signal was assumed to be negligible: we adopted single value of
1.008 for the entire data span. Similarly, the factor due to differential
refraction at radio frequencies has been adopted as a constant for all
the data: 1.001.
The remaining correction coefficients are applicable to interferometric
observations, thus starting with the September 1960 data.
Since the radio Sun is not a point source, there is a loss of signal
for an interferometer which is referred to as the fringe visibility.
In our case and for the quiet Sun (the model brightness distribution taken as
an average of the distributions observed by Kundu et al. 1977, and
Lantos and Avignon 1975) we found the loss whose value corresponds to the
factor of 1.022.
The radiation power pattern of the antennas is broad in the plane containing
the E-W direction and is narrower in the plane perpendicular to it. It allows
the Sun to be visible during 6 – 8 hours daily without movement of the antenna.
However, to follow
the changing declination of the Sun over the year the antenna direction
must be adjusted accordingly. This adjustment is done in discrete steps of
6° of antenna elevation (or declination of the Sun).
The discreteness leads to a small loss of the received flux, which is corrected
globally with a factor of 1.002.
The by far greatest factor comes from confusion of radiation of radio
source Cas A with that of Cyg A. This effect comes about because of the large
width of interferometer antenna power patterns and relative angular
proximity of the two sources: the two sources are seen simultaneously while
observing either of them. As a result the recorded interference fringes
exhibit fairly complex features. These were compared with a theoretical
model to find satisfactory agreement (Borkowski 1981b, 1982). The
corrections derived from the model for the years 1960 through 1985
by Borkowski (1981b) were now extrapolated through 1992. The factors used
for each year between 1960 and 1992 were, respectively:
1.234, 1.237, 1.240, 1.244, 1.247, 1.250, 1.253, 1.257, 1.260,
1.264, 1.267, 1.270, 1.274, 1.217, 1.220, 1.224, 1.224, 1.224,
1.224, 1.224, 1.224 (1.241), 1.241, 1.241, 1.241, 1.241, 1.241,
1.241, 1.241, 1.268, 1.268 (1.271), 1.271, 1.271, 1.271 (1.287).
The three numbers, given in brackets, refer to the second half of 1974,
August through December 1988, and 23 April through end of December 1992.
The described factors were multiplied for each day and the resulting
coefficient applied to the measured daily mean as stored in
archival files of our station (values normally rounded to one decimal
place). These final coefficients (excluding 1 AU adjustment) for the
years 1958 through 1992 are as follows:
1.128, 1.113, 1.391 (1.388),
1.377, 1.363, 1.351, 1.337, 1.324, 1.310, 1.298, 1.285, 1.273,
1.260, 1.248, 1.109, 1.048, 1.034 (1.194), 1.196, 1.196, 1.196,
1.196, 1.196, 1.196 (1.282), 1.282, 1.282, 1.282, 1.282, 1.282,
1.282, 1.310, 1.310 (1.313), 1.313, 1.313, 1.313 (1.330),
where brackets enclose figures valid for a part of the respective
year.
 |
Fig. 1. Logarithms of corrected daily flux densities of the Sun
at 127 MHz, 1958 – 1992 |
|
The corrected observed daily mean flux densities, including
1 AU adjustment, are presented in the form of yearly tables
(Table 1). The year 1986,
for which there were no observations, is excluded from the tabulation to save
space. These daily data are also plotted in Fig. 1.
3. Statistical and spectral analysis
Having corrected the observational daily fluxes we are in position to
carry out preliminary analyses. Here is the summary of our results.
Our data set consists of 9 654 daily values distributed between October 29,
1958 and 31 December 1992, i.e. over 12 483 days. Thus
we lost 22.7 % of observing days. The longest data gap lasted from
May 24, 1985 to April 1, 1987 and was due to equipment malfunction and its
subsequent replacement.
 |
Fig. 2. Distribution of daily flux densities of the Sun at 127 MHz,
1958 – 1992 |
|
In Fig. 2 we present the frequencies of occurences of flux
densities rounded to one decimal digit. The most frequent value is
3.6 s.f.u. (it occurred 258 times).
The smallest recorded value is 1.0 s.f.u. (on November 15, 1972)
and the highest one is 2741.4 s.f.u. (December 26, 1980).
The quiet sun (understood as a sun completely covered by the coronal
holes) flux density at 127 MHz has been estimated to be 3.1
±0.4 s.f.u.
(Borkowski 1982a). Thus our flux densities below about 2.7 s.f.u.
(some 5 % of all the data) should be considered unreliable. The
underestimation might be due to instabilities of the instrument
and partly can be ascribed to normal statistical errors.
The overall average daily flux at 127 MHz turns out to be 20.60 s.f.u.
 |
Fig. 3. Fourier power spectrum (arbitrary units) of daily flux
densities of the Sun at 127 MHz, 1958 – 1992. The unit on the frequency
axis, 1 cycle/span, equals 1 cycle/(12483 days). A small portion of
the spectrum is expanded 100 times in frequency and plotted with the dotted
line between every 0.1 cycle/span point. |
|
The entire daily data set was spectral analysed
in search of possible periodicities. To obtain the power spectra
we have applied the common discrete Fourier transform (DFT) and
the maximum entropy method (MEM).
To have the Fourier spectrum smooth and accurate we have calculated its
frequency components beyond the resolution limit of 1 cycle/span, span
being equal to 12 483 days. The lower frequency part, about 10 %, of the
spectrum is presented in Fig. 3.
It shows strongest peaks at periods of about 49
and 10.4 years (frequencies of 0.69 and 3.3 cycle/span, respectively).
Most likely, the 49-year period is spurious since it is longer
than the span of our data (34 years).
Nevertheless, we note the existence of a cycle quite close to the discussed,
a 55-year cycle, in the sunspot data (Schove 1983).
The second largest peak in the spectrum, the 10.4-year cycle, is obviously
associated with the well known 11-year periodicity of the sunspots.
Both cyclicities are clearly visible in the MEM spectrum of the smoothed
data, Fig. 4.
 |
Fig. 4. Maximum entropy power spectrum (arbitrary units) of 150-day
flux density means of the Sun at 127 MHz, 1958 – 1992. The unit
on the frequency axis is 1 cycle/(12483 days). |
|
Between the two, there is a smaller peak of unknown origin at the period
of 17.8 years. Its amplitude falls to the half of the plotted value when
the 49-year cycle is removed; that makes it no higher than many higher
frequency peaks which we have considered statistically insignificant.
The peak is completely absent in the MEM spectrum.
Also, the shorter cycles seen in this spectrum seem to carry
little significance. However, it is possible that the sharp 81-day
(154 cycles/span) periodicity, also visible in the MEM spectrum of monthly
means (not reproduced here), is related to the 78- and 84-day cycles
discovered for shorter data intervals in the sunspot areas (1971 – 1978)
and the number of flares (in the solar activity cycle 20) by Bai and Sturrock
(1991).
Acknowledgements.
We owe thanks to many individuals who participated
in construction and maintenance of the receiving equipment,
carried out the observations and labourously reduced lots and lots
of rolls of recorded data over the 3.5 decades.
The complete list of persons involved would be much too long to be presented
here, nevertheless we would like to mention some people by name to honour
their outstanding contribution.
Among those, who pioneered the observations in the late fifties are
S. Gorgolewski, H. Iwaniszewski and K. Grzesiak.
Z. Turło and J. Hanasz of the Polish Academy of Sciences joined
the team shortly thereafter, and A. Kus joined in 1968.
The present authors begun contributing, to a varying degree, only in 1972
(K.M.B. and J.B.U.) or 1979 (G.G.).
This work was partially supported through the Nicolaus Copernicus University
grant No 267-a.
REFERENCES
Baars, J.W.M., Genzel, R., Pauliny-Toth, I.I.R., and Witzel, A. 1977,
Astron. Astrophys., 61, 99.
Bai, T., and Sturrock, P.A. 1991, Nature, 350, 141.
Bogart, R.S., and Bai, T. 1985, Astrophys. J. Lett., 299, L51.
Borkowski, K.M. 1976, Post. Astron., XXIV, 15 (in Polish).
Borkowski, K.M. 1981a, Post. Astron., XXIX, 55 (in Polish).
Borkowski, K.M. 1981b, Post. Astron., XXIX, 113 (in Polish).
Borkowski, K.M., 1982a, Solar Phys., 81, 207.
Borkowski, K.M. 1982b, in: Solar-Geophysical Activity Reports
for September 7-24, 1977 and November 22, 1977 Report UAG-83, Part I,
World Data Center A for STP, NOAA, Boulder 130.
Borkowski K.M., Gorgolewski S., and Usowicz J.B., 1975,
Post. Astron., XXIII, 141 (in Polish).
Borkowski, K.M., Zlobec, P., and Zanelli, C.A. 1980, Mem. Soc. Astron. Ital.,
51, 247.
Kundu, M.R., Gergely, T.E., and Erickson, W.C. 1977, Solar Phys., 53, 489.
Lantos, P., and Avignon, Y. 1975, Astron. Astrophys., 41, 137.
Schove, D.J. (ed.) 1983, Sunspot Cycles, Hutchinson Ross Publ. Co.,
Stroudsburg (Penn., USA), 378.
File translated from
TEX
by
TTH,
version 3.12 on 3 Sep 2002.
Table 1
Tables of daily data for the years: 1958,
1959, 1960, 1961,
1962, 1963, 1964,
1965, 1966, 1967,
1968, 1969, 1970,
1971, 1972, 1973,
1974, 1975, 1976,
1977, 1978, 1979,
1980, 1981, 1982,
1983, 1984, 1985,
1986, 1987, 1988,
1989, 1990, 1991 and
1992
Daily Mean Flux Densities at 127 MHz in the Year 1958
Day Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec
1 - - - - - - - - - - - -
2 - - - - - - - - - - - 19.6
3 - - - - - - - - - - - 12.3
4 - - - - - - - - - - 3.4 7.1
5 - - - - - - - - - - 3.4 20.7
6 - - - - - - - - - - 4.4 24.1
7 - - - - - - - - - - 3.9 -
8 - - - - - - - - - - 3.4 -
9 - - - - - - - - - - - 7.2
10 - - - - - - - - - - - 5.1
11 - - - - - - - - - - - 11.2
12 - - - - - - - - - - 3.4 4.0
13 - - - - - - - - - - 3.4 4.0
14 - - - - - - - - - - 3.4 -
15 - - - - - - - - - - 3.4 -
16 - - - - - - - - - - - -
17 - - - - - - - - - - - -
18 - - - - - - - - - - 3.4 3.4
19 - - - - - - - - - - 3.4 3.4
20 - - - - - - - - - - 3.4 4.0
21 - - - - - - - - - - 3.4 -
22 - - - - - - - - - - 3.4 -
23 - - - - - - - - - - - 11.1
24 - - - - - - - - - - - 5.1
25 - - - - - - - - - - 15.6 -
26 - - - - - - - - - - 8.2 -
27 - - - - - - - - - - 18.0 -
28 - - - - - - - - - - 3.4 -
29 - - - - - - - - 4.8 14.9 -
30 - - - - - - - - 9.1 - -
31 - - - - - 6.8 -
Av: - - - - - - - - - 6.9 5.8 9.5
| 1958 yearly mean = 7.4 s.f.u. (mean of 37 daily means) |
|
Daily Mean Flux Densities at 127 MHz in the Year 1959
Day Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec
1 - - - - 4.1 3.9 3.6 6.0 - 4.1 4.5 7.4
2 - - - 3.5 3.5 4.8 4.4 5.2 42.7 - 6.9 44.4
3 - - 3.4 3.6 3.5 4.9 4.3 4.6 67.1 3.6 7.5 49.3
4 - 3.7 3.4 6.2 3.5 4.1 4.5 4.1 4.8 7.9 8.2 7.0
5 - 3.7 3.4 3.5 4.4 6.3 4.3 3.8 8.7 3.9 6.9 8.3
6 - - 3.4 12.4 6.1 6.2 - 3.8 4.5 3.5 5.3 5.4
7 - - 4.1 4.7 11.1 4.0 5.4 3.7 4.3 3.4 4.9 6.7
8 - - 4.1 20.1 5.6 3.8 4.3 3.8 4.6 3.6 4.6 4.4
9 - - 3.4 3.5 3.7 43.2 4.3 3.5 4.3 3.4 4.7 3.5
10 - - 3.4 4.5 11.7 4.5 3.8 4.3 4.4 3.8 6.6 4.2
11 - - 3.4 4.6 41.3 3.9 3.8 3.5 9.0 4.2 4.6 8.3
12 - 18.9 4.5 3.6 37.2 4.6 6.7 3.9 3.8 - 4.4 7.2
13 - 33.7 3.4 3.5 9.2 3.9 4.1 3.9 4.1 3.8 9.3 5.9
14 - 22.6 3.4 3.5 3.9 3.6 74.8 4.1 5.1 3.7 5.1 10.3
15 - 17.7 3.4 3.5 3.5 4.3 7.3 4.3 6.6 4.8 8.4 10.9
16 - - - 3.5 3.5 3.7 4.6 3.5 3.8 18.4 8.1 10.4
17 - - 3.4 3.5 3.5 3.8 6.3 3.9 17.3 12.3 6.1 -
18 - 4.0 3.6 5.2 3.5 4.4 4.1 20.9 3.8 6.2 7.6 12.9
19 - 3.4 6.0 4.0 3.8 8.3 4.1 3.8 3.8 4.9 8.2 -
20 - 3.7 6.7 3.7 3.9 3.8 4.6 5.0 3.8 4.6 11.5 9.1
21 - - 10.3 3.5 3.8 5.6 3.9 7.3 4.0 4.4 8.5 16.1
22 14.7 - 11.4 3.9 3.5 3.8 3.8 5.5 4.5 4.7 53.8 30.0
23 24.5 - 4.3 3.5 3.9 3.6 4.3 46.5 4.0 4.2 50.7 14.1
24 - 4.0 49.2 3.5 3.8 7.5 3.9 64.3 4.6 5.1 28.2 16.2
25 - 3.4 9.9 11.6 4.9 4.1 - 188.1 4.3 4.0 99.0 -
26 - 3.4 3.4 3.5 4.6 3.9 4.1 163.0 5.3 4.6 262.5 -
27 4.0 3.4 27.7 3.8 3.5 4.8 5.2 134.2 5.1 4.4 16.7 -
28 3.3 3.7 - 5.0 8.0 13.6 4.6 78.8 4.9 4.7 9.0 -
29 3.4 - 4.4 4.3 5.9 4.6 66.0 5.7 3.8 5.9 3.3
30 - - 3.5 4.9 4.8 31.3 35.9 5.1 4.4 6.7 17.0
31 - - 4.1 50.6 17.9 4.4 -
Av: 10.0 9.2 7.6 5.1 7.1 6.3 9.5 29.3 8.8 5.1 22.5 13.0
| 1959 yearly mean = 11.4 s.f.u. (mean of 305 daily means) |
|
Daily Mean Flux Densities at 127 MHz in the Year 1960
Day Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec
1 - - - - - - - - - 4.7 11.4 5.3
2 11.0 - - - - - - - - - 5.7 10.4
3 5.2 - - - - - - - 30.0 5.3 4.8 12.7
4 13.8 - - - - - - - - 5.7 5.9 -
5 4.3 - - - - - - - - 6.3 5.6 -
6 5.3 - - - - - - - 6.4 4.7 5.3 11.1
7 3.3 - - - - - - - 4.8 6.0 4.9 9.6
8 3.4 - - - - - - - 3.8 407.9 6.1 9.7
9 7.2 - - - - - - - 4.9 30.0 4.6 8.2
10 3.3 - - - - - - - 5.8 325.7 341.4 7.7
11 7.2 - - - - - - - 16.5 73.3 657.4 6.7
12 47.9 - - - - - - - 5.1 11.2 319.3 8.6
13 12.6 - - - - - - - 9.6 4.8 4.2 5.9
14 11.7 - - - - - - - 7.2 3.7 6.9 6.5
15 11.9 - - - - - - - 4.2 3.7 9.9 4.7
16 4.5 - - - - - - - 3.9 4.8 4.5 5.1
17 7.9 - - - - - - - 6.9 6.2 4.6 5.9
18 4.5 - - - - - - - 4.1 27.3 7.1 7.0
19 3.7 - - - - - - - 5.8 202.7 9.2 3.5
20 5.9 - - - - - - - 4.2 - 8.1 5.4
21 - - - - - - - - 4.8 9.8 6.2 7.9
22 4.7 - - - - - - - 4.2 6.3 4.7 10.6
23 4.9 - - - - - - - 4.2 4.5 8.0 5.8
24 3.7 - - - - - - - 4.2 4.1 8.7 6.2
25 4.6 - - - - - - - 4.2 3.3 7.7 6.2
26 5.0 - - - - - - - 4.2 3.7 7.0 5.5
27 4.4 - - - - - - - 4.5 3.2 8.3 5.8
28 5.6 - - - - - - - - 3.3 6.9 -
29 4.6 - - - - - - - - 7.8 6.6 -
30 6.0 - - - - - - 5.9 3.7 6.4 6.6
31 4.1 - - - - 3.3 8.1
Av: 7.7 - - - - - - - 6.6 40.9 49.9 7.3
| 1960 yearly mean = 23.5 s.f.u. (mean of 139 daily means) |
|
Daily Mean Flux Densities at 127 MHz in the Year 1961
Day Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec
1 5.2 7.4 4.2 5.9 7.4 5.0 4.4 4.3 10.1 9.5 - -
2 33.7 4.1 4.2 5.5 6.7 5.1 4.3 4.4 5.7 5.8 - 2.8
3 8.8 4.1 5.1 5.2 6.6 6.5 4.4 6.5 6.0 4.7 - 7.2
4 6.3 5.8 5.1 5.1 6.9 6.4 3.8 5.0 8.0 4.8 - 2.4
5 6.7 5.2 5.1 7.2 8.1 5.5 4.0 4.5 7.7 5.5 - 14.0
6 7.2 5.0 5.3 5.0 6.7 7.7 4.8 4.2 10.6 5.6 - -
7 6.5 8.6 4.6 4.3 6.6 6.4 4.7 5.1 4.3 4.5 4.3 4.7
8 7.5 8.6 - 5.0 7.7 10.9 6.0 6.6 4.2 8.2 4.1 3.6
9 6.0 6.6 3.9 5.1 7.0 4.4 5.5 7.5 6.0 13.7 4.2 4.7
10 8.4 - 3.0 4.4 6.7 5.4 5.7 10.0 4.2 5.6 5.3 4.1
11 6.3 40.4 6.0 5.5 8.3 11.4 23.2 7.6 6.4 6.9 4.6 3.1
12 7.9 - 5.0 5.7 6.0 5.8 93.6 19.2 4.0 6.0 - 3.9
13 6.3 - - 5.3 5.5 4.5 115.6 7.9 5.4 15.6 - 4.0
14 - - 4.6 3.9 4.4 7.7 - 9.0 6.8 6.4 3.6 3.6
15 - 4.2 4.9 5.5 6.0 12.9 23.9 30.9 5.6 6.0 3.8 3.3
16 - 4.2 5.4 4.3 5.5 5.1 7.1 60.9 4.2 6.8 3.1 3.1
17 4.5 4.2 5.3 4.4 6.6 5.8 11.9 14.0 3.8 4.6 3.6 3.2
18 3.6 - 5.3 6.4 5.6 5.7 31.3 11.4 3.9 7.5 3.2 3.3
19 4.4 - 5.7 5.0 5.8 7.8 18.2 7.0 3.7 12.7 3.6 3.5
20 4.3 - 4.6 13.2 6.6 16.8 - 5.2 3.9 6.3 4.2 11.5
21 6.0 4.2 5.6 15.9 6.6 7.3 4.4 5.2 4.6 4.4 3.6 6.0
22 - 4.2 6.6 12.8 7.5 16.3 7.7 5.6 16.9 4.9 4.2 5.5
23 - 4.2 6.6 18.8 6.4 62.4 4.3 5.8 8.3 5.0 4.0 4.9
24 - 4.2 69.4 7.5 5.5 10.7 23.4 5.8 15.1 5.2 4.2 33.3
25 6.0 4.2 28.1 7.7 6.1 6.5 7.4 5.9 4.6 3.8 3.6 4.4
26 16.3 6.1 20.6 8.6 5.2 5.5 4.3 6.0 4.0 6.3 3.9 3.9
27 4.7 6.1 5.6 8.1 4.7 5.8 4.7 6.3 5.7 6.2 3.9 3.3
28 6.4 4.2 6.4 6.3 3.7 5.4 4.1 7.6 5.2 6.2 4.7 3.3
29 - 10.0 4.0 - 5.0 3.8 5.8 5.8 5.2 4.6 3.6
30 - 6.5 5.3 6.9 5.4 3.7 6.2 9.0 4.9 3.7 3.3
31 12.4 5.5 5.4 3.8 - 5.0 3.5
Av: 8.0 6.9 8.9 6.9 6.3 9.2 15.3 9.7 6.5 6.6 4.0 5.5
| 1961 yearly mean = 7.9 s.f.u. (mean of 334 daily means) |
|
Daily Mean Flux Densities at 127 MHz in the Year 1962
Day Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec
1 3.7 37.6 12.8 - 7.2 5.9 - 3.9 - 5.5 3.8 3.4
2 3.7 21.8 7.0 4.4 6.8 7.9 12.8 4.1 - 4.8 2.3 3.3
3 3.4 27.1 10.2 - 5.7 10.7 9.4 4.9 - 4.8 2.3 2.9
4 3.4 5.7 6.7 - 5.4 - 8.5 4.1 6.8 5.2 - 4.0
5 3.4 - 7.6 - 5.8 - 6.8 4.8 5.0 4.0 2.3 3.4
6 3.4 - 5.9 4.1 6.1 7.6 3.7 3.6 4.3 4.8 2.0 2.8
7 - 6.2 5.8 4.2 5.7 5.3 - - 8.6 3.8 3.7 5.0
8 3.4 6.5 4.7 3.7 4.9 - - 3.2 4.4 3.1 29.2 6.3
9 3.2 6.9 5.8 3.8 4.7 4.8 - 5.0 4.0 3.9 9.4 8.1
10 3.3 7.2 7.3 10.1 - 7.7 3.9 5.0 2.8 3.8 1.6 14.3
11 3.2 7.4 7.4 4.9 - - 11.4 4.8 3.7 4.3 12.8 2.8
12 3.2 - 7.5 3.8 8.8 - 5.4 5.2 5.9 4.3 4.0 2.6
13 3.2 - 6.7 - - 4.9 5.8 4.2 8.0 5.0 7.6 2.6
14 - 16.4 7.5 - 6.4 2.5 9.7 4.5 5.2 4.1 36.3 2.4
15 - - 7.0 - 6.3 4.5 7.7 8.0 6.5 4.3 4.7 2.6
16 3.4 - 4.9 - 4.6 4.2 - - 11.0 5.6 - 2.8
17 - - 4.0 - 4.7 2.4 - 7.4 13.5 6.4 - 2.9
18 - - 4.9 46.2 - 1.7 7.7 - 4.8 4.5 - 3.0
19 5.0 - 6.1 31.4 8.2 3.1 6.6 - 5.4 5.7 - 7.0
20 4.8 - - 20.6 - 3.2 - 4.7 3.7 5.7 - 9.0
21 4.5 - 9.5 9.8 - 2.0 6.2 4.9 4.3 5.0 5.2 13.2
22 5.9 - 6.1 6.8 - 2.7 9.6 4.2 7.3 4.3 3.1 4.0
23 5.0 16.5 6.6 5.0 10.2 6.2 4.9 4.0 4.1 5.9 3.1 3.3
24 5.0 148.9 5.6 5.4 20.6 4.5 - 5.6 4.8 3.6 3.3 3.3
25 5.4 152.1 5.8 5.0 40.0 12.7 4.8 4.6 6.0 3.4 3.1 3.2
26 4.9 145.8 5.2 4.8 79.5 12.0 4.2 - 31.5 3.5 3.1 3.0
27 4.8 128.1 5.0 16.6 - 11.0 4.2 - 9.4 3.6 3.1 2.9
28 3.2 - 4.2 7.6 - 3.2 3.8 4.4 13.7 5.8 2.8 2.8
29 5.6 3.8 5.8 5.5 2.7 3.8 4.0 5.3 5.5 2.7 3.0
30 4.8 4.9 6.5 8.3 3.0 3.7 2.9 5.6 2.0 2.5 3.0
31 4.5 4.8 8.8 4.2 - 3.1 3.3
Av: 4.1 49.0 6.4 10.0 12.0 5.5 6.5 4.7 7.2 4.5 6.4 4.4
| 1962 yearly mean = 8.5 s.f.u. (mean of 299 daily means) |
|
Daily Mean Flux Densities at 127 MHz in the Year 1963
Day Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec
1 4.2 6.8 4.1 3.9 4.0 6.0 3.2 2.4 - - 8.4 4.9
2 4.0 7.6 4.1 3.9 3.6 3.8 3.4 1.8 - - 5.6 4.6
3 3.9 6.4 4.2 3.8 3.7 5.1 4.0 2.4 - - 5.2 7.9
4 6.4 5.9 4.0 3.4 3.8 5.3 3.8 21.0 - - 6.0 14.4
5 4.4 6.2 4.3 3.4 4.0 3.9 3.2 - - 8.8 5.6 7.6
6 4.6 5.8 4.0 4.7 4.4 4.3 4.6 - - 8.0 5.4 6.4
7 5.2 5.1 4.1 3.9 4.5 4.9 5.9 - - 7.7 4.6 3.9
8 6.0 6.0 3.7 3.7 3.7 6.0 2.9 - - 7.5 6.0 3.9
9 4.0 6.0 3.2 - 3.9 5.4 4.0 - - 7.7 5.2 3.5
10 4.2 5.9 4.1 - - 5.3 4.0 - - 7.8 5.2 3.7
11 4.2 6.3 3.7 - 4.8 22.7 - - - 8.6 3.8 3.4
12 - 6.8 3.9 5.8 - 56.3 10.7 - 1.5 8.3 3.2 3.4
13 - 6.2 4.1 5.2 - - 3.3 - 1.9 8.2 - -
14 - 5.1 4.9 4.8 5.2 30.4 3.3 - 2.6 9.3 4.1 -
15 3.7 5.7 4.7 5.6 8.1 9.6 2.8 - 2.2 12.9 4.1 2.2
16 9.4 6.1 4.7 7.8 5.4 5.3 3.2 - 4.6 - - 2.5
17 7.8 5.1 3.6 50.6 9.1 5.4 3.1 - 7.9 - 3.3 2.1
18 7.6 5.0 4.0 - 4.3 3.6 3.5 - 20.3 - - 3.3
19 9.7 4.9 5.1 16.4 4.3 3.9 2.5 - - - - -
20 9.8 5.4 5.5 4.8 3.6 5.6 - - - - - -
21 10.1 5.0 5.0 4.4 12.0 6.3 3.6 - - - 4.3 5.0
22 10.7 4.5 5.5 3.4 3.5 4.3 2.4 - - - - 5.7
23 9.6 5.4 4.4 4.4 4.6 5.2 - - - - 4.9 4.8
24 9.3 5.2 5.1 3.6 17.9 4.2 4.6 - - 9.2 4.7 5.0
25 9.0 5.2 5.2 4.1 4.4 3.8 - - - - 4.6 5.4
26 4.2 4.6 4.7 4.1 5.8 3.6 5.2 - - - 4.1 4.6
27 4.7 4.4 6.7 4.7 4.4 3.4 4.9 - - - 4.7 4.2
28 7.2 4.1 5.1 3.8 3.9 2.9 4.2 - - - 3.9 5.0
29 7.2 4.8 3.8 3.7 3.9 3.5 - - - 4.1 4.7
30 9.3 5.4 4.0 4.0 3.8 4.2 - - 7.5 4.2 4.8
31 11.8 4.3 4.2 2.6 - 7.3 4.7
Av: 6.9 5.6 4.5 6.6 5.3 8.1 4.0 6.9 5.9 8.5 4.8 4.9
| 1963 yearly mean = 5.8 s.f.u. (mean of 273 daily means) |
|
Daily Mean Flux Densities at 127 MHz in the Year 1964
Day Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec
1 5.4 6.6 10.0 3.5 4.1 3.4 3.9 4.0 5.4 3.1 6.8 -
2 4.9 6.2 9.1 3.1 4.9 4.5 3.9 4.0 5.0 2.7 4.7 -
3 5.2 5.5 5.4 2.8 5.0 2.8 3.7 3.2 4.8 2.9 6.0 -
4 5.3 6.0 4.9 2.9 4.5 2.5 3.0 3.9 4.9 3.1 4.7 -
5 5.7 5.6 4.7 3.2 3.5 3.4 5.0 3.2 3.0 - 4.5 -
6 5.7 6.2 5.0 - 4.1 3.4 4.1 2.9 2.9 2.8 3.9 -
7 - 8.1 4.3 - 4.1 3.7 3.9 2.1 4.1 2.9 3.5 -
8 - 5.9 4.7 3.1 3.7 4.7 3.3 2.9 4.3 - 4.2 -
9 5.8 9.1 4.4 2.7 3.7 3.9 4.0 2.9 2.8 3.7 4.3 2.1
10 - 8.2 4.9 2.8 - 4.3 4.1 3.4 4.3 4.7 3.4 3.8
11 4.7 6.9 5.1 3.0 - 4.4 4.1 4.1 3.0 3.9 3.7 2.7
12 6.2 7.6 5.8 - 3.0 2.8 3.6 4.3 2.3 3.7 3.4 2.9
13 5.2 8.1 4.6 - 4.6 4.6 3.6 2.7 - 4.9 4.3 2.7
14 6.6 7.4 4.9 - 3.1 4.1 4.1 - 2.2 - 4.1 2.7
15 8.5 7.4 6.1 2.7 3.4 4.8 3.6 3.8 3.2 3.7 3.9 2.6
16 6.0 6.8 17.5 2.6 3.3 3.6 4.6 4.0 3.1 4.4 3.9 3.0
17 5.4 9.8 4.5 3.1 3.7 4.6 3.3 4.4 3.8 5.3 3.5 -
18 - 11.8 5.0 5.1 2.9 3.2 4.0 3.2 3.9 - 4.2 2.8
19 - 8.1 4.6 4.5 3.1 4.0 3.2 3.3 3.2 - 4.4 -
20 - 7.5 4.5 4.1 3.8 3.5 3.2 4.4 4.3 8.1 - 2.6
21 4.9 9.9 5.0 4.6 4.9 - 3.0 6.2 3.4 6.5 3.4 3.0
22 5.7 7.5 7.3 6.4 4.1 - 3.0 4.1 3.9 4.2 3.7 3.2
23 7.8 7.6 5.3 - - 2.8 - 4.8 3.1 4.6 3.3 3.1
24 7.3 10.3 13.6 4.2 3.4 3.0 3.7 - 3.2 4.4 3.5 2.7
25 6.2 10.5 4.7 6.1 - 3.7 3.7 5.3 2.8 4.4 2.7 2.6
26 12.6 10.2 4.4 7.2 4.3 3.9 3.2 4.6 2.6 4.8 2.6 3.5
27 8.6 10.0 3.5 6.5 4.3 3.3 3.9 3.7 2.6 4.6 3.0 5.2
28 6.0 9.1 3.7 10.4 3.8 3.2 3.9 3.0 2.7 5.0 2.7 3.2
29 6.0 8.7 4.3 5.2 3.2 3.7 4.0 4.9 3.5 4.0 2.6 2.8
30 8.3 3.5 4.3 4.5 3.2 4.4 - 4.0 5.4 2.5 2.8
31 6.9 3.6 5.0 3.3 - 7.0 2.7
Av: 6.4 8.0 5.8 4.3 3.9 3.7 3.7 3.8 3.5 4.4 3.8 3.0
| 1964 yearly mean = 4.6 s.f.u. (mean of 326 daily means) |
|
Daily Mean Flux Densities at 127 MHz in the Year 1965
Day Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec
1 6.5 5.3 3.5 3.3 2.7 2.9 2.6 2.5 - 2.4 - 1.9
2 3.3 3.9 3.1 3.0 - 3.3 2.7 2.6 2.7 6.2 2.7 1.9
3 10.6 4.1 - 3.2 2.7 3.1 2.6 2.0 3.1 2.5 2.9 2.1
4 2.6 3.9 3.5 3.3 2.8 3.7 2.7 2.3 3.5 15.1 3.6 1.8
5 2.3 3.9 2.9 3.3 3.2 3.5 2.6 2.5 2.7 2.9 3.5 1.9
6 2.0 4.1 - 4.0 3.1 - 2.6 2.5 3.4 2.8 3.5 1.7
7 - 4.5 4.7 4.9 3.1 3.0 2.7 2.6 2.1 2.6 - 1.7
8 2.4 - 3.9 4.5 3.0 3.0 8.2 2.6 2.6 3.2 - 1.8
9 2.2 3.2 9.9 4.6 3.2 3.1 4.0 2.6 9.0 2.8 3.9 1.8
10 2.9 2.8 - 4.1 - 2.9 2.7 2.4 6.6 2.8 3.1 1.7
11 - 4.5 3.9 4.4 2.7 3.7 2.1 2.3 3.8 2.6 3.2 1.7
12 3.6 5.9 4.4 3.9 2.8 3.1 2.3 2.3 2.7 3.0 3.4 1.8
13 - 4.6 6.7 3.2 2.7 3.6 3.8 2.0 2.7 3.0 - 1.7
14 - 7.5 - 3.1 2.7 2.9 1.8 2.6 2.3 2.9 2.8 1.7
15 - 6.1 - 2.9 3.2 3.3 2.5 - 2.3 2.8 2.8 1.8
16 - 4.3 3.8 2.8 2.7 2.7 2.6 3.4 2.0 2.8 2.3 1.5
17 - 4.5 4.5 2.7 2.7 2.6 2.6 3.4 1.9 2.8 - 1.5
18 - 4.7 5.2 2.4 3.0 2.7 2.6 3.4 1.9 2.9 2.5 1.7
19 4.7 4.7 4.9 2.3 3.0 3.0 2.5 3.4 2.0 2.4 2.6 1.7
20 2.4 3.8 - 2.4 3.3 3.0 2.6 3.3 2.0 2.6 2.6 1.5
21 2.3 4.7 5.4 2.3 3.7 3.4 2.3 3.3 2.1 2.4 2.6 1.4
22 3.6 - - 2.3 3.7 3.0 2.3 3.8 2.0 - - -
23 2.7 - - 1.6 2.9 3.0 1.9 3.1 2.3 - - 1.4
24 2.7 - 3.3 3.1 3.0 3.1 2.5 3.1 3.5 - - -
25 2.6 - 3.3 2.3 3.3 3.1 - 3.1 2.4 - 1.3 -
26 3.0 3.6 3.2 2.0 2.9 3.1 2.2 - 2.7 - - 1.3
27 2.8 3.6 2.9 1.3 2.9 2.7 2.3 2.7 - - 1.5 -
28 2.8 3.9 - 1.3 3.0 2.9 2.3 2.3 2.4 - 1.5 4.4
29 2.8 3.2 1.5 3.0 2.3 2.2 2.3 2.1 - 1.3 12.2
30 2.8 - 2.8 2.4 2.7 2.7 2.0 2.0 2.6 - 1.5
31 3.0 3.0 2.9 1.5 1.8 2.3 1.3
Av: 3.3 4.4 4.2 3.0 3.0 3.1 2.7 2.7 2.9 3.4 2.7 2.2
| 1965 yearly mean = 3.1 s.f.u. (mean of 312 daily means) |
|
Daily Mean Flux Densities at 127 MHz in the Year 1966
Day Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec
1 1.8 1.5 2.6 19.5 2.1 9.4 5.7 - 23.9 4.7 5.0 -
2 - 1.5 2.3 9.0 3.3 5.3 7.0 - - 4.9 17.8 -
3 - 2.3 2.1 - 1.9 4.4 - 4.9 4.3 6.0 - -
4 1.5 1.8 2.1 7.3 2.8 - 6.2 5.0 3.9 3.3 - -
5 1.8 - 1.7 - - - 5.1 4.7 3.7 3.4 - -
6 1.8 - - 8.0 - - 5.8 4.7 3.2 4.7 - 2.7
7 1.8 - 2.1 3.9 3.5 - 5.6 4.2 3.1 6.5 - 3.1
8 1.8 1.8 - 14.8 2.1 4.6 6.6 4.4 2.7 5.5 - 9.1
9 2.0 - - 7.5 2.7 6.6 10.4 4.3 - 3.7 - 4.3
10 1.8 1.5 2.1 - 2.5 - 8.1 4.2 - 3.4 3.0 8.4
11 2.4 - - 3.0 2.4 - 15.7 4.4 - - 3.1 7.0
12 2.4 - 1.7 2.0 - - 6.4 - - 4.6 8.1 50.1
13 2.5 - 1.6 2.0 2.3 5.4 6.1 3.0 - 4.8 3.7 87.2
14 2.3 - 2.1 2.0 2.5 5.7 5.4 3.2 - 5.1 3.7 23.0
15 2.9 2.0 2.1 2.1 2.8 7.3 5.5 - - 5.1 4.5 4.9
16 40.6 1.8 2.1 - 3.3 4.2 6.4 3.4 - 4.9 3.3 4.1
17 17.9 2.0 12.8 - 3.5 4.5 17.9 3.5 4.2 4.6 3.2 3.8
18 72.0 2.3 45.4 - 4.4 - 12.2 3.6 - 3.0 3.2 4.4
19 3.6 1.7 25.3 - 4.4 - 13.4 - 3.3 3.9 2.8 -
20 - 2.7 50.7 - 6.3 - 3.4 - - 4.0 3.5 4.2
21 1.9 - 31.2 1.5 6.0 - 3.1 - - 4.4 2.9 4.3
22 2.0 6.9 - 2.8 6.4 7.3 - - - 6.4 3.1 -
23 2.2 4.0 130.2 3.8 11.1 8.9 - - - 6.0 3.1 4.1
24 - 1.8 32.7 4.1 5.5 27.1 2.2 5.8 - 6.6 2.8 5.3
25 2.0 1.5 92.9 5.0 6.5 6.2 - 9.2 - 4.4 3.2 5.2
26 2.3 1.8 2.9 4.9 - 5.7 3.0 11.9 - - 4.3 5.3
27 2.0 - - 3.2 5.2 - 3.9 23.1 - - 4.6 -
28 2.0 - 1.7 3.3 - 5.0 6.9 - - - 3.2 3.8
29 1.8 1.8 2.0 - 5.7 5.4 - - - 2.7 4.4
30 1.7 2.0 2.1 - 5.6 9.9 37.2 4.9 - 2.4 4.6
31 1.5 2.7 - 45.8 22.6 - 14.4
Av: 6.7 2.3 18.3 5.2 4.1 7.2 8.6 8.4 5.7 4.7 4.2 11.6
| 1966 yearly mean = 7.5 s.f.u. (mean of 259 daily means) |
|
Daily Mean Flux Densities at 127 MHz in the Year 1967
Day Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec
1 4.2 18.9 6.2 7.0 2.2 5.9 9.9 - - 2.9 52.1 6.6
2 14.4 4.5 3.4 8.8 - 2.4 6.2 - - 2.7 204.3 3.5
3 9.0 5.8 6.1 4.2 3.2 5.5 5.8 - - 3.4 15.6 3.3
4 7.3 - 4.3 6.0 3.2 - 23.3 - - 3.1 17.9 3.7
5 28.6 - 6.1 11.2 4.0 29.7 4.3 - - 2.6 10.2 3.0
6 13.2 7.4 2.4 3.9 3.0 7.1 3.4 5.2 - 2.3 - 3.1
7 2.6 6.1 2.4 4.4 2.9 3.9 3.6 4.7 - - 12.4 -
8 4.3 82.9 8.3 3.1 2.8 3.9 3.6 4.7 3.4 1.9 8.8 -
9 2.5 3.3 7.9 3.6 2.9 3.7 3.1 - 2.8 - - 6.5
10 2.9 - 6.1 7.6 2.8 2.8 3.4 - 6.4 2.7 5.9 4.5
11 3.1 2.9 11.5 6.5 3.3 2.7 2.8 9.2 - 2.6 5.6 3.5
12 3.0 3.8 3.7 15.0 3.3 2.9 3.1 7.1 2.8 8.5 4.3 3.6
13 3.4 5.7 3.1 8.0 3.3 2.5 3.1 14.9 2.2 6.5 7.6 2.9
14 5.4 5.4 2.6 14.5 2.8 2.9 3.2 2.4 - 2.5 4.6 3.6
15 16.9 3.4 1.8 4.0 2.5 2.9 2.5 6.3 - 1.5 - 4.1
16 3.8 20.1 2.3 15.3 2.9 3.1 2.7 8.8 2.9 1.7 2.9 3.5
17 4.8 3.5 2.2 4.1 3.3 2.8 3.1 14.5 39.8 - - 4.4
18 3.3 3.2 2.1 4.1 3.2 3.1 2.7 59.1 7.7 2.1 - 5.5
19 2.5 3.9 2.3 4.6 2.9 4.0 3.3 13.4 - 3.9 - 5.4
20 - 4.3 5.3 5.1 9.3 3.9 2.8 6.6 11.4 3.5 - 6.8
21 2.6 - - 4.8 11.2 4.0 2.9 5.8 5.0 2.8 - 65.5
22 2.8 6.0 3.5 4.9 15.7 4.0 3.7 7.2 5.0 - - 10.5
23 5.4 - 1.9 5.1 8.2 3.5 3.5 - 8.1 - 12.8 3.6
24 4.8 - 2.7 5.6 85.4 11.3 3.6 - 8.6 8.5 21.4 3.3
25 11.6 45.8 3.5 5.1 86.5 3.6 26.4 - - 11.3 3.9 3.3
26 6.7 149.4 4.6 4.9 32.5 9.9 18.9 - 3.0 13.3 4.3 14.1
27 5.4 4.6 - 3.9 19.7 9.3 26.6 - 4.4 13.3 - 13.7
28 7.3 3.2 16.4 3.3 28.0 5.9 21.3 - 4.4 10.6 9.3 3.5
29 6.5 19.1 3.6 - 39.3 15.8 - 9.0 6.4 - 3.6
30 8.1 21.6 3.2 - 22.7 2.8 - 5.9 9.6 - 4.8
31 4.0 55.2 3.2 - - - 4.3
Av: 6.7 17.9 7.5 6.2 12.7 7.2 7.4 11.3 7.4 5.2 22.4 7.2
| 1967 yearly mean = 9.3 s.f.u. (mean of 303 daily means) |
|
Daily Mean Flux Densities at 127 MHz in the Year 1968
Day Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec
1 3.5 74.8 31.5 4.7 3.7 4.6 3.3 3.7 - 5.0 45.2 -
2 3.7 15.2 10.7 4.2 - 3.2 - 3.6 - 3.5 44.2 -
3 3.2 13.4 4.3 4.0 3.8 - 3.5 4.8 13.5 - 5.4 -
4 3.2 4.7 4.0 2.6 18.0 - 3.3 - 62.8 3.6 24.5 -
5 3.9 5.0 3.7 3.2 4.4 3.3 3.6 - 12.1 3.1 - -
6 4.5 4.2 2.7 3.9 3.0 3.2 7.8 - 6.9 2.7 - 10.2
7 3.7 4.1 3.5 3.1 - - - 3.0 18.1 2.8 4.3 3.5
8 7.3 3.9 2.7 3.0 5.1 4.0 - 3.3 5.0 2.9 - 3.6
9 2.6 4.1 3.2 3.2 3.3 19.3 18.3 - 4.4 2.8 4.7 4.4
10 5.8 4.0 2.8 3.4 4.2 4.0 10.0 3.3 4.2 2.6 6.9 4.6
11 - 4.5 2.5 3.2 3.0 - 5.2 3.2 4.3 2.8 6.0 39.3
12 4.1 4.1 - 4.0 - 4.6 10.0 - 6.0 2.9 5.3 7.8
13 4.8 4.1 3.2 4.3 - 4.9 13.3 4.6 4.8 7.7 6.2 -
14 4.8 4.5 3.4 3.6 3.3 3.6 5.3 7.0 5.1 2.7 6.3 4.0
15 4.4 4.3 3.7 3.5 2.6 3.3 4.8 4.3 5.6 3.6 6.0 14.1
16 4.2 - 3.4 3.2 3.3 3.4 4.0 5.8 5.3 5.0 - -
17 4.1 - - 3.5 3.0 3.1 3.7 67.1 - 90.5 - -
18 3.9 - 3.6 4.0 2.6 3.6 3.7 102.6 4.0 4.7 - 3.1
19 4.1 - 3.4 2.9 3.3 8.6 3.3 115.8 4.0 51.0 6.4 -
20 3.6 - 5.1 2.6 3.0 3.7 3.3 157.8 3.5 31.8 5.0 3.6
21 3.5 - - 2.7 3.9 4.1 3.3 157.7 4.8 - 4.1 3.0
22 3.6 - 3.3 2.6 2.8 5.0 - 7.9 4.8 - 5.5 6.0
23 4.6 - 3.6 - 2.6 4.8 2.9 5.0 3.2 17.2 - 3.9
24 8.2 2.9 4.6 2.9 - 5.4 5.0 4.1 - 9.3 - -
25 4.5 - 5.9 3.4 6.9 6.6 5.3 5.0 - 4.1 6.6 -
26 9.0 4.0 6.0 3.8 2.5 4.0 4.6 - 25.4 161.1 9.6 -
27 12.3 - 11.5 2.9 - 4.9 5.3 4.5 5.2 112.9 3.9 29.8
28 57.3 12.2 10.0 3.5 3.4 4.5 4.2 4.5 7.1 16.6 3.5 -
29 36.1 44.1 5.6 2.9 - 4.1 3.8 4.2 8.2 167.2 3.7 -
30 47.4 5.8 3.4 - 3.6 5.0 4.5 - 72.2 - -
31 24.9 17.6 2.5 3.7 - 39.2 4.7
Av: 9.7 11.5 6.1 3.4 4.1 4.9 5.5 28.6 9.5 29.7 10.2 9.1
| 1968 yearly mean = 11.0 s.f.u. (mean of 295 daily means) |
|
Daily Mean Flux Densities at 127 MHz in the Year 1969
Day Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec
1 2.9 3.2 3.4 4.2 - 3.9 - 3.0 4.7 3.2 - -
2 2.8 3.2 2.9 3.3 - - 3.3 - 3.5 8.5 - -
3 3.3 16.1 3.3 3.2 4.4 3.3 3.6 - 3.2 7.6 - 4.1
4 4.6 3.6 - 3.4 4.0 3.5 3.2 - 4.8 3.2 2.9 4.2
5 - 3.7 3.3 3.7 13.0 25.4 3.4 2.5 4.7 3.2 2.6 -
6 - 3.6 3.3 4.6 - 4.9 - 7.7 3.7 10.4 3.6 -
7 22.3 3.8 3.6 - 3.5 7.6 5.1 3.1 4.1 2.9 10.2 -
8 10.3 4.0 3.3 - 7.7 3.9 7.5 2.2 3.9 3.3 8.9 -
9 5.9 3.7 - 4.1 5.6 4.6 4.6 2.2 - 3.4 4.0 -
10 3.3 4.2 - 11.1 3.2 33.9 4.6 1.8 3.2 3.7 9.5 4.2
11 5.2 5.6 4.5 4.5 4.2 19.4 3.4 1.7 2.5 6.1 38.9 4.1
12 7.4 4.1 4.1 5.2 204.1 5.4 3.3 2.6 2.7 4.8 19.1 5.7
13 5.3 - 4.5 5.8 6.2 3.9 3.0 1.7 3.6 6.3 5.2 4.2
14 3.2 4.8 3.8 4.7 4.2 - - 2.2 - 4.3 4.2 2.6
15 2.5 4.0 3.9 4.7 7.5 - 3.3 2.0 - 3.0 7.7 -
16 2.8 - 4.0 5.8 9.6 - 3.6 2.1 4.0 3.9 3.7 -
17 4.2 - 4.0 5.1 9.4 9.2 3.0 - 6.4 3.7 3.0 5.2
18 6.7 - 3.8 5.1 - 18.1 3.7 2.1 2.8 3.0 - -
19 2.8 4.2 4.8 5.1 - 10.5 6.0 3.0 2.2 4.8 - 7.3
20 2.8 10.7 9.9 5.4 7.7 - - 3.1 1.7 4.0 - -
21 2.6 3.7 - 4.8 18.8 8.2 3.0 3.8 2.6 - 2.0 5.1
22 2.8 5.7 4.8 4.0 133.1 25.9 2.6 3.6 2.1 3.2 2.9 -
23 2.8 6.2 5.4 4.1 5.6 3.8 - 3.9 2.3 6.4 3.2 -
24 2.6 6.7 - 4.1 - 4.3 - 4.2 - 5.8 5.0 -
25 3.6 225.9 - - 3.8 3.8 2.8 3.9 - - - -
26 246.9 5.6 4.1 - 6.0 3.7 2.8 3.6 - - - -
27 130.9 3.5 4.2 - - 3.4 2.8 3.9 - 7.3 - -
28 69.2 3.4 6.0 - 5.6 3.4 2.5 4.2 - 4.8 - -
29 19.8 4.1 - 6.1 - 3.0 5.7 - 20.1 - -
30 - 4.3 - - - 2.5 4.2 3.3 4.8 - -
31 5.9 3.9 4.1 2.6 5.2 - -
Av: 20.9 14.3 4.3 4.8 20.8 9.3 3.6 3.3 3.4 5.4 7.6 4.7
| 1969 yearly mean = 8.8 s.f.u. (mean of 273 daily means) |
|
Daily Mean Flux Densities at 127 MHz in the Year 1970
Day Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec
1 - - 206.3 - - 2.9 7.8 4.2 2.2 2.1 7.3 4.2
2 9.5 4.8 13.1 - - - 6.1 - 1.9 2.1 6.1 5.3
3 9.6 2.7 12.0 2.5 - 3.1 4.4 - 3.2 1.9 33.5 2.7
4 - 4.3 589.0 3.7 - 2.3 9.8 3.6 220.7 2.9 8.4 3.7
5 - - 13.9 - - - 4.6 3.5 20.4 - 14.5 2.2
6 - 3.2 14.9 - - 3.8 4.2 3.6 - 2.0 7.6 2.0
7 3.5 2.2 13.9 3.9 - - 5.9 4.5 13.1 - 4.2 -
8 3.9 3.2 12.5 11.1 - 6.2 7.8 - 7.7 4.3 4.6 3.3
9 2.6 2.6 - 10.9 - - 4.6 - 2.3 2.6 5.7 5.5
10 - 2.6 5.0 7.8 - - 4.3 2.8 - 4.1 7.8 5.6
11 - 1.5 3.9 5.6 3.1 - 3.9 2.7 1.9 2.4 4.2 3.9
12 - - - 9.5 4.8 3.5 - 3.2 - - 12.3 24.9
13 - 2.8 - 5.8 7.7 6.5 3.5 6.1 2.6 4.1 38.5 -
14 5.0 - - 4.7 2.8 4.8 - 6.5 1.4 2.4 30.7 -
15 6.6 - - - 3.1 39.3 3.1 5.4 2.5 2.5 36.5 -
16 - 8.0 - - 3.4 39.3 3.4 16.5 - 5.5 - -
17 3.3 5.3 - 4.7 2.8 25.4 7.3 66.0 2.0 1.6 16.8 5.5
18 3.2 - 4.1 4.4 2.8 6.1 6.2 71.7 1.7 2.1 311.3 -
19 2.3 4.1 3.6 5.1 3.1 4.8 9.5 35.9 3.2 2.0 29.5 18.3
20 3.3 10.2 4.4 5.1 3.7 4.8 7.9 102.3 2.8 - 31.5 -
21 4.5 10.4 3.0 4.8 3.1 5.5 - 38.7 3.0 7.2 - -
22 2.9 4.1 2.8 5.1 7.6 4.8 - 3.7 2.5 - - 9.8
23 3.7 3.0 - - 2.8 4.6 - - 6.9 - 8.2 6.2
24 2.4 2.1 4.4 4.5 3.1 4.2 - 6.1 7.7 7.7 - 9.9
25 2.3 - 289.6 4.8 4.0 - - 5.8 4.7 8.0 - 4.4
26 2.9 - 3.9 - 3.8 4.2 - 4.0 4.3 6.0 - -
27 10.5 3.6 5.3 4.2 3.8 4.2 20.4 3.5 2.3 16.2 - -
28 - - - - 3.1 - 8.6 3.9 3.4 20.6 4.3 3.0
29 - - 3.3 - 54.7 - 2.8 2.9 21.5 - 3.2
30 - 4.8 - 3.8 6.1 - - 2.1 63.9 4.7 2.8
31 1.5 - 3.8 - 2.4 9.4 3.2
Av: 4.4 4.2 60.5 5.6 3.8 11.0 6.7 16.4 12.7 8.2 28.5 6.2
| 1970 yearly mean = 14.0 s.f.u. (mean of 259 daily means) |
|
Daily Mean Flux Densities at 127 MHz in the Year 1971
Day Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec
1 5.1 13.1 - 7.1 4.4 4.9 5.2 - 2.7 6.0 - 5.1
2 8.1 - 4.3 7.9 5.2 4.9 4.8 - 3.4 4.1 6.5 5.3
3 - 10.8 4.5 5.4 2.3 4.6 7.6 - 3.8 4.2 7.1 5.1
4 - 8.2 7.4 - 4.7 4.4 - - 3.9 5.1 7.6 4.8
5 21.6 5.8 - - 4.4 5.1 3.9 6.2 - 8.1 5.4 10.2
6 3.6 6.7 - - 6.1 - 3.6 4.2 4.3 7.5 4.8 8.6
7 15.9 5.5 - 6.0 6.2 - 4.9 4.4 13.7 - 5.4 9.2
8 - 9.5 - 10.1 7.9 6.0 5.2 - 4.2 3.6 5.3 5.8
9 254.2 4.3 - - - 5.3 4.9 4.6 5.1 3.2 5.0 -
10 94.3 7.5 4.8 - 4.5 6.3 - 5.0 7.1 - 6.0 9.1
11 42.8 7.4 5.3 - 44.6 - - 4.5 4.0 4.2 5.3 4.5
12 61.3 4.5 4.6 - 17.2 3.7 - 5.4 - 8.2 8.6 -
13 - 6.0 4.9 14.4 4.5 - - 4.4 3.5 4.1 3.2 4.6
14 29.4 - 5.8 313.8 3.7 4.6 - 4.1 3.7 2.9 2.7 6.8
15 6.0 2.3 6.4 76.9 2.3 6.4 - 3.6 3.4 3.5 3.1 7.4
16 12.2 6.7 - 13.6 - 6.1 - 4.5 3.5 3.8 6.2 6.9
17 - 5.1 - - - - 12.2 4.1 4.2 3.0 3.0 5.8
18 3.7 - 3.8 - 4.0 - 10.6 8.1 4.8 3.8 15.1 6.3
19 29.2 7.0 5.2 - - 5.7 20.0 26.3 7.9 4.1 3.9 -
20 560.7 7.3 4.5 - 2.6 - 6.7 96.6 4.0 4.8 4.5 4.0
21 69.4 - 4.2 - 3.8 - 4.5 34.3 4.3 3.7 4.3 5.1
22 7.0 8.5 - 5.9 2.6 5.5 3.6 - 4.0 - 4.0 3.7
23 8.6 6.4 5.0 3.2 4.5 - - 246.0 4.1 5.6 4.4 3.9
24 6.4 6.6 4.5 5.8 - 4.6 - 740.1 - - 4.4 -
25 7.6 5.3 7.3 - 5.5 4.6 - 192.2 3.8 11.2 4.0 -
26 - 6.5 6.8 - 6.5 5.9 4.9 17.2 - 5.9 5.0 4.7
27 - 3.9 6.6 7.6 - - 6.6 8.8 2.6 4.9 4.9 -
28 - - 7.2 6.5 6.3 - 9.3 4.7 3.5 5.3 4.5 -
29 44.8 10.4 5.4 4.2 - - - 4.4 10.5 4.2 -
30 23.1 6.5 4.3 - 9.0 4.9 3.9 3.1 15.9 4.9 -
31 46.1 6.8 11.0 6.2 2.7 9.6 5.9
Av: 59.2 6.7 5.8 30.9 7.0 5.4 6.8 59.8 4.5 5.8 5.3 6.0
| 1971 yearly mean = 16.6 s.f.u. (mean of 273 daily means) |
|
Daily Mean Flux Densities at 127 MHz in the Year 1972
Day Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec
1 - - 2.9 3.1 - - - - 6.1 2.1 - 1.9
2 - 4.0 3.1 3.4 3.5 3.9 - - - 2.1 - -
3 4.6 4.7 4.0 3.2 3.2 4.0 - 21.0 - 4.7 - -
4 7.1 3.1 8.9 3.7 5.0 6.4 - - - 4.4 - 1.7
5 4.3 3.6 - 4.1 - 4.0 - - 4.8 4.7 - 1.7
6 5.0 3.6 - 4.6 4.1 4.0 - - 4.1 4.4 - -
7 4.4 4.0 - 4.3 - 4.2 - - 3.9 4.3 - -
8 4.0 3.7 - 4.1 4.6 5.1 - - 22.5 4.3 - -
9 4.1 3.7 43.1 4.0 5.2 6.5 - - 13.4 7.4 - 1.7
10 4.4 3.6 24.4 4.0 4.1 4.2 - - - 7.7 - 1.7
11 2.3 3.8 9.1 4.3 4.4 4.5 - - - - 1.3 -
12 2.7 1.8 - 4.2 5.3 4.6 - - 4.4 4.2 1.3 -
13 3.3 - - 4.2 8.6 5.4 - - 3.0 3.2 1.3 -
14 3.2 - 3.1 5.1 4.9 10.3 - - 4.4 4.6 1.2 3.1
15 3.1 3.4 3.1 6.8 4.7 8.1 - - 3.8 - 1.0 2.3
16 2.9 13.6 3.3 4.8 3.3 8.8 - - 3.8 - 2.6 2.4
17 - 9.6 3.2 5.9 3.1 6.1 - - - - 2.2 2.4
18 3.0 2.9 2.7 7.3 3.1 7.9 - - 3.2 - - 3.7
19 6.8 - 2.9 5.0 3.2 6.5 - 6.6 - - - 3.0
20 2.8 - 3.5 7.1 4.1 7.0 - - 3.7 - - 3.2
21 3.0 3.0 3.6 44.8 159.7 8.7 - 7.8 2.8 - 2.3 4.3
22 3.2 4.1 3.3 20.7 74.8 5.3 - 6.7 3.5 - 3.7 4.9
23 6.2 18.2 3.9 5.2 3.5 4.9 - 9.5 5.2 - 3.9 2.5
24 4.8 6.2 4.5 5.4 3.4 20.3 - 8.0 2.8 - 16.9 -
25 3.9 3.6 5.0 5.3 3.8 28.4 - 7.9 - - 2.8 -
26 4.4 3.5 8.1 5.3 3.6 3.6 - 7.9 2.8 - - -
27 4.4 - 2.8 6.7 4.6 3.4 - 8.3 2.5 - 1.5 -
28 4.8 4.0 2.7 6.9 3.6 3.7 - 14.6 2.6 16.9 1.5 -
29 5.0 3.5 2.7 4.8 26.9 3.9 - 9.6 2.8 2.8 1.8 -
30 - 2.9 - 8.7 4.2 - 7.1 2.3 12.2 4.5 -
31 4.7 2.7 10.0 - 7.3 - -
Av: 4.2 5.0 6.4 6.8 13.5 6.8 - 9.4 4.9 5.6 3.1 2.7
| 1972 yearly mean = 6.5 s.f.u. (mean of 243 daily means) |
|
Daily Mean Flux Densities at 127 MHz in the Year 1973
Day Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec
1 - - - - - - 2.8 1.7 3.3 3.5 2.5 -
2 - - - - - - 2.3 1.9 5.5 3.9 3.5 -
3 - - - - - - 2.8 2.1 97.8 4.3 1.1 -
4 - - - - - - 3.0 - 22.0 2.6 - -
5 - - - - - - - 2.0 - 2.8 - -
6 - - - - - - 2.3 1.8 3.8 3.2 3.4 -
7 - - - - - - 3.0 2.6 9.8 2.3 5.6 -
8 - - - - - - - 2.7 - 2.9 4.2 -
9 - - - - - - 2.5 2.3 - 2.9 2.1 -
10 - - - - - - 1.8 2.2 - 2.9 4.8 -
11 - - - - - - 1.6 2.4 3.1 2.5 - -
12 - - - - - 2.6 - 2.0 3.0 2.2 6.2 -
13 - - - - - 2.5 2.0 2.3 2.8 2.2 6.1 -
14 - - - - - 4.8 2.5 - 3.0 2.8 5.8 -
15 - - - - - 3.5 - 2.0 2.8 3.1 3.5 -
16 - - - - - 2.9 - 2.1 2.4 2.8 5.7 -
17 - - - - - 3.0 - 2.1 2.9 2.5 6.2 -
18 - - - - - - 2.8 2.8 3.3 2.4 5.8 -
19 - - - - - 4.9 2.8 2.0 2.5 2.2 6.6 -
20 - - - - - 6.1 2.6 2.1 2.7 2.1 6.1 -
21 - - - - - 2.8 2.3 2.9 1.9 1.7 5.0 -
22 - - - - - 4.2 1.7 3.2 1.4 1.8 - -
23 - - - - - 2.9 - 2.0 1.9 2.0 6.8 -
24 - - - - - - 2.5 2.6 - 2.1 12.6 -
25 - - - - - - 2.1 2.7 3.6 2.1 17.8 -
26 - - - - - - 2.6 - 3.3 2.1 15.5 -
27 - - - - - 3.3 3.2 - 2.2 2.1 6.2 -
28 - - - - - 2.3 - - 2.3 4.0 10.3 -
29 - - - - 3.7 - 4.1 2.5 14.9 6.4 -
30 - - - - 3.5 1.9 - 2.5 8.3 7.1 -
31 - - - 1.6 3.4 3.3 -
Av: - - - - - 3.5 2.4 2.4 7.7 3.2 6.4 -
| 1973 yearly mean = 4.3 s.f.u. (mean of 144 daily means) |
|
Daily Mean Flux Densities at 127 MHz in the Year 1974
Day Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec
1 3.0 3.0 3.1 3.0 4.3 3.1 - - - 10.4 2.4 -
2 2.8 2.4 3.3 3.0 6.1 2.8 - - - 3.9 2.9 -
3 2.9 2.1 3.0 3.0 13.5 3.3 - - - 4.3 2.2 8.3
4 2.8 2.5 2.2 2.9 5.7 4.0 - - - 19.6 3.2 8.0
5 3.8 1.9 1.7 3.3 18.5 4.1 - - - 24.5 3.6 7.0
6 3.4 2.3 2.4 3.6 11.6 3.6 - - - 7.6 3.8 25.0
7 3.7 2.3 3.1 3.4 3.6 14.8 - 5.6 - 9.7 3.0 7.8
8 2.9 2.0 2.4 3.3 4.5 4.7 - 5.0 - 8.6 2.9 8.6
9 3.3 2.0 3.2 3.2 4.9 3.9 - 4.8 - 6.5 2.8 6.7
10 2.6 2.1 4.5 3.4 5.0 4.4 - 4.7 - 15.9 3.2 7.9
11 15.7 2.4 3.0 2.7 4.9 3.9 - - 8.3 624.3 5.6 7.3
12 2.6 2.4 2.8 4.1 5.0 10.0 - 9.7 - 257.9 3.3 6.5
13 2.5 2.3 2.7 3.7 4.9 12.7 - - 44.9 8.1 4.0 8.4
14 3.0 1.9 2.7 5.0 4.8 5.5 - - 124.8 5.0 3.3 -
15 3.7 2.3 2.7 5.8 3.0 5.0 - - 141.7 4.0 3.0 -
16 4.1 5.5 2.8 4.2 3.6 3.4 - - 346.6 3.6 4.6 -
17 4.8 13.0 3.0 4.6 3.1 9.9 - - 16.4 3.6 8.0 9.4
18 3.1 5.7 4.2 14.5 2.1 3.4 - - 310.4 3.4 10.6 10.5
19 2.7 6.1 3.3 4.4 1.6 2.8 - - 9.6 3.1 6.5 9.4
20 2.5 2.2 3.4 3.8 - 2.9 - - 6.7 3.2 20.5 10.3
21 2.3 2.0 2.9 3.6 2.8 2.3 - - 4.7 3.5 5.7 10.3
22 2.6 2.2 3.1 3.5 1.8 1.7 - - 5.4 3.0 7.6 -
23 2.9 1.5 2.9 3.7 2.7 1.3 - - 13.3 3.0 36.3 10.9
24 3.1 1.7 2.6 3.8 3.3 1.2 - - 4.8 3.4 5.4 8.7
25 2.5 1.8 3.0 3.7 3.1 1.1 - - 7.8 3.2 4.5 7.7
26 1.9 1.4 - 8.1 3.1 1.9 - - 5.5 2.9 5.6 8.1
27 2.0 - 2.6 3.7 10.3 1.4 - - 4.9 2.7 4.8 9.0
28 - - 2.8 2.9 11.7 - - - 4.8 3.1 3.6 9.9
29 2.4 2.9 3.3 4.7 - - - 4.9 3.3 5.1 9.3
30 2.7 6.2 3.3 4.9 - - - - 3.3 3.7 8.0
31 2.7 2.7 3.6 - - 3.2 7.0
Av: 3.4 3.0 3.0 4.1 5.4 4.4 - 6.0 59.2 34.2 6.1 9.2
| 1974 yearly mean = 11.5 s.f.u. (mean of 282 daily means) |
|
Daily Mean Flux Densities at 127 MHz in the Year 1975
Day Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec
1 - 3.9 3.3 5.4 3.4 4.2 7.0 3.7 4.8 4.4 3.7 4.3
2 7.5 4.1 4.1 4.7 7.7 4.4 3.2 4.6 4.4 3.5 3.5 3.7
3 8.0 3.3 4.5 6.0 5.1 4.1 3.1 36.9 3.8 3.5 3.6 5.9
4 11.2 3.0 5.2 6.8 4.5 4.2 3.1 7.8 4.3 3.6 4.0 3.3
5 31.3 2.8 6.7 5.9 7.5 3.9 3.1 11.2 4.9 3.6 3.8 9.8
6 9.0 3.8 5.1 5.4 4.7 3.8 3.0 190.0 4.9 4.1 3.9 3.9
7 7.2 4.1 5.7 4.9 3.7 4.3 3.6 93.0 - 4.2 3.4 3.9
8 4.4 4.1 4.5 5.8 3.5 4.6 3.0 35.1 - 3.7 3.4 3.8
9 - 3.1 4.8 4.9 3.7 3.8 3.0 6.9 5.1 3.7 3.3 3.1
10 6.8 5.9 - 4.6 3.7 3.3 3.5 6.4 5.1 3.3 3.6 3.4
11 8.0 3.1 4.8 4.3 4.1 3.3 3.6 25.2 5.2 3.7 3.5 3.5
12 9.9 3.4 4.3 3.8 3.3 - 3.8 4.1 4.4 - 3.9 3.7
13 11.6 3.3 4.1 - 4.6 3.7 3.5 4.7 4.0 3.8 3.5 4.2
14 19.9 3.6 3.9 4.0 3.3 4.3 3.5 3.9 - 3.5 25.4 3.9
15 9.3 3.2 5.1 4.0 3.7 3.9 3.5 3.4 - 3.9 15.1 3.5
16 12.0 4.3 4.7 4.1 3.8 3.8 3.1 4.0 4.8 - 86.2 3.5
17 7.2 - 8.8 4.8 3.8 4.0 3.3 4.2 4.7 3.7 327.3 3.6
18 6.5 2.7 5.1 5.4 3.8 3.8 - 3.8 4.3 3.9 423.0 3.2
19 6.1 2.6 6.2 4.7 3.7 3.0 2.8 3.8 4.6 3.4 242.3 3.2
20 5.6 2.6 5.6 4.7 4.0 3.2 2.8 4.2 4.5 4.0 1871.1 3.2
21 4.7 3.3 4.6 4.6 3.9 3.5 - 3.7 4.1 3.7 276.5 3.1
22 5.3 2.5 4.5 4.5 3.9 - - 3.8 4.8 3.3 140.1 3.6
23 5.1 3.0 4.8 4.6 4.0 - 3.1 4.2 5.2 3.6 124.0 3.5
24 4.8 2.7 4.4 4.0 3.7 4.3 3.7 3.8 5.2 3.5 5.9 3.8
25 4.3 3.0 3.9 4.2 3.8 3.5 3.5 3.3 4.8 3.4 7.5 3.6
26 3.8 2.9 4.4 4.4 3.3 3.5 - 4.0 4.9 3.2 3.3 3.2
27 4.1 2.9 4.6 3.8 4.4 4.1 - 4.3 4.8 3.2 3.3 3.2
28 3.6 2.6 4.8 4.5 3.6 3.8 6.8 3.9 4.9 3.1 3.3 3.4
29 3.6 4.1 3.9 4.1 3.5 3.6 4.1 3.8 3.7 3.6 3.6
30 3.9 - - 4.1 3.7 3.1 3.9 4.4 3.7 3.8 3.4
31 3.9 4.5 4.1 4.1 3.9 3.9 3.9
Av: 7.9 3.3 4.9 4.7 4.1 3.8 3.6 16.1 4.6 3.6 120.3 3.8
| 1975 yearly mean = 15.6 s.f.u. (mean of 344 daily means) |
|
Daily Mean Flux Densities at 127 MHz in the Year 1976
Day Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec
1 3.7 4.2 2.9 9.7 3.4 2.7 3.3 9.2 10.4 4.0 3.1 3.6
2 3.5 3.8 3.3 4.1 3.5 3.0 3.3 39.2 8.6 3.5 3.8 3.4
3 3.4 3.8 3.3 3.6 - 3.0 2.8 9.7 11.7 12.0 3.3 3.0
4 3.5 3.7 3.3 3.4 3.0 3.0 3.0 65.0 60.7 4.4 3.3 3.1
5 3.4 4.0 3.3 - 3.0 2.8 3.3 61.3 - 3.7 3.6 3.6
6 4.2 4.5 3.5 3.4 3.4 3.0 3.3 114.7 - 3.8 3.6 3.8
7 3.6 3.4 3.5 3.5 3.2 3.6 3.6 18.4 3.6 3.7 3.9 3.8
8 3.9 3.4 3.7 3.6 3.5 3.6 3.3 19.3 3.8 3.8 3.4 3.6
9 3.7 3.5 4.2 4.3 3.5 3.5 3.3 20.9 3.5 3.6 3.4 3.6
10 3.6 4.0 3.5 3.2 3.3 3.5 3.7 15.4 3.9 3.5 3.8 3.2
11 3.5 3.7 3.8 - 3.1 3.2 3.6 6.6 38.5 3.5 3.9 3.5
12 3.8 3.4 4.1 - 3.3 3.2 3.2 4.9 3.9 3.3 3.9 3.8
13 14.5 3.6 3.4 3.7 3.5 3.2 3.3 6.5 3.5 3.2 3.6 -
14 9.4 3.5 3.3 3.7 3.1 3.2 - 3.4 3.5 3.3 3.5 14.3
15 3.9 3.7 3.6 4.0 3.8 3.0 3.2 3.3 3.4 3.4 3.3 11.4
16 3.4 4.0 3.6 4.2 4.0 3.3 3.5 3.2 3.7 3.7 3.5 3.6
17 3.9 3.9 4.3 4.0 3.5 3.3 3.3 3.6 4.0 3.3 3.5 4.5
18 3.9 3.6 8.4 3.7 3.2 3.2 - 13.7 3.6 3.3 3.6 3.6
19 4.5 3.6 5.7 3.9 3.3 3.2 - 3.7 3.3 3.1 12.0 4.2
20 2.9 3.3 37.0 3.4 3.8 3.1 3.5 3.3 3.5 3.4 3.7 3.8
21 3.0 4.1 59.5 3.4 3.4 3.1 3.7 3.7 3.4 3.2 7.1 3.7
22 4.1 3.9 6.2 3.6 3.3 3.2 3.7 3.5 3.5 3.3 5.1 3.9
23 4.1 3.5 5.3 3.6 2.9 3.0 3.2 3.3 3.7 3.4 3.6 3.5
24 3.5 3.4 18.7 3.6 4.2 3.1 3.5 3.3 3.8 3.4 4.0 3.4
25 3.5 3.8 52.4 3.6 3.4 3.1 3.3 3.3 3.8 12.5 4.0 2.9
26 3.2 3.6 19.6 3.5 3.7 2.7 3.5 3.2 3.5 5.3 3.7 2.4
27 3.5 3.6 129.8 4.2 3.1 - 3.2 3.1 3.4 3.9 3.4 3.1
28 3.1 3.5 205.8 3.9 3.3 - 3.5 3.4 3.7 4.1 3.6 3.4
29 3.1 3.9 34.0 2.5 2.8 3.0 3.5 3.3 3.6 4.1 3.5 3.6
30 2.9 52.4 7.0 2.7 3.3 3.7 3.3 3.6 4.6 3.8 16.2
31 3.6 166.8 2.7 22.2 4.3 3.5 3.5
Av: 4.1 3.7 27.8 4.0 3.3 3.1 4.1 14.9 7.6 4.2 4.1 4.6
| 1976 yearly mean = 7.3 s.f.u. (mean of 354 daily means) |
|
Daily Mean Flux Densities at 127 MHz in the Year 1977
Day Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec
1 - 3.6 3.5 3.7 3.9 3.6 4.2 3.7 3.7 3.6 3.2 3.4
2 - 3.8 3.5 3.5 3.5 3.7 4.7 3.8 3.7 3.6 3.6 3.5
3 - 3.3 3.5 3.7 3.8 3.7 4.0 3.8 4.0 - 3.8 3.5
4 6.7 3.3 3.3 3.7 3.6 6.2 4.7 3.7 4.0 3.7 3.9 3.5
5 4.0 3.5 3.4 3.7 3.4 54.4 4.1 3.7 3.5 8.4 3.5 3.5
6 3.8 3.5 3.3 3.7 3.2 6.2 3.7 3.4 3.6 6.7 3.6 5.9
7 3.6 3.4 3.3 3.6 3.4 13.7 3.6 3.7 3.6 13.7 10.9 3.4
8 3.2 3.4 3.7 3.5 3.2 10.6 3.6 3.8 3.8 42.4 3.4 3.5
9 3.4 3.7 11.4 3.6 3.5 15.8 3.6 4.1 3.9 4.9 3.3 3.6
10 3.6 4.4 5.1 3.6 3.7 3.9 3.6 3.9 4.1 7.7 3.3 58.5
11 3.6 5.6 3.5 3.7 3.8 4.3 3.7 3.9 4.0 3.5 3.8 5.4
12 20.6 4.8 3.7 5.3 3.9 3.6 3.6 3.8 4.2 3.5 4.2 9.5
13 3.2 7.6 3.7 3.6 3.7 3.7 3.8 3.8 4.0 3.6 3.7 4.1
14 5.4 3.7 3.5 3.9 3.5 3.8 4.0 4.0 3.5 3.4 3.9 3.4
15 3.1 3.5 3.7 3.9 3.3 4.3 4.1 3.9 3.5 7.3 3.5 3.4
16 3.4 3.5 3.7 6.5 3.4 3.8 3.8 3.8 3.4 25.4 3.5 3.8
17 3.4 3.6 3.8 4.0 3.4 3.7 4.0 4.0 4.5 45.0 8.6 3.4
18 3.9 3.4 3.6 3.5 3.8 3.8 3.8 3.9 3.7 26.3 4.0 3.8
19 4.3 3.4 3.6 3.4 3.8 3.8 3.7 4.2 24.1 5.2 3.5 3.7
20 4.5 3.6 3.4 3.6 3.8 3.7 3.6 4.3 4.1 3.6 3.4 3.6
21 3.5 3.9 3.3 3.5 3.7 3.8 3.7 4.9 6.0 31.8 3.4 3.7
22 3.4 3.4 3.6 3.5 3.9 4.1 3.8 4.8 10.5 73.9 5.0 5.0
23 5.1 3.4 3.4 3.6 3.7 3.6 4.1 4.6 6.3 5.4 3.5 4.9
24 3.8 4.7 3.4 3.5 3.9 11.6 4.1 4.8 9.9 3.8 3.4 16.3
25 3.5 3.5 3.7 3.5 3.7 5.9 4.2 4.4 4.1 5.4 3.7 4.3
26 3.0 3.4 3.6 3.6 3.6 5.8 3.9 4.5 4.0 3.7 3.6 5.0
27 3.2 3.4 3.6 3.8 3.6 9.4 3.8 5.7 3.8 3.5 3.1 7.6
28 4.4 3.4 3.5 3.6 3.8 7.7 3.8 5.5 3.7 3.5 3.3 7.5
29 3.2 3.5 3.5 3.8 4.5 3.7 4.6 4.2 3.5 3.6 9.1
30 3.1 3.7 3.8 3.6 6.3 3.8 4.4 3.8 4.4 4.2 4.3
31 3.1 3.7 3.6 3.6 4.0 7.1 3.8
Av: 4.4 3.8 3.8 3.8 3.6 7.4 3.9 4.2 5.1 12.2 4.0 6.7
| 1977 yearly mean = 5.3 s.f.u. (mean of 361 daily means) |
|
Daily Mean Flux Densities at 127 MHz in the Year 1978
Day Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec
1 4.6 3.8 4.3 4.9 110.5 4.9 4.5 4.2 4.9 8.3 3.8 4.5
2 14.7 24.2 4.5 5.0 4.9 10.1 4.6 4.2 7.4 4.1 3.5 4.3
3 203.5 25.2 - 5.0 11.1 5.8 4.5 4.3 25.3 4.1 3.6 7.4
4 5.1 3.6 4.5 4.7 119.6 6.0 4.6 4.7 78.2 4.1 4.0 3.9
5 4.5 17.7 4.5 4.6 54.4 5.2 13.4 4.6 62.2 4.9 5.9 4.1
6 4.6 8.5 68.1 9.2 7.7 5.4 6.7 4.7 36.9 4.8 12.2 4.1
7 37.8 20.5 9.4 4.6 6.0 5.2 4.9 4.7 8.4 5.0 93.4 5.5
8 4.9 28.5 25.8 13.3 9.5 5.1 4.6 4.7 11.5 5.5 56.5 21.8
9 6.1 31.2 12.6 6.1 4.4 4.6 106.8 4.8 5.0 5.0 28.5 5.0
10 4.9 43.7 21.6 15.1 4.3 4.8 117.7 4.5 5.0 6.7 9.7 24.7
11 4.6 163.1 7.7 8.8 4.6 4.6 319.2 6.3 8.4 16.6 33.6 108.1
12 4.3 132.1 9.7 6.7 4.2 4.4 30.9 4.7 5.3 7.5 97.0 51.8
13 4.5 262.7 10.8 5.3 4.5 4.6 5.1 4.7 4.4 189.2 6.6 17.6
14 5.6 211.5 9.6 37.3 4.5 4.8 4.4 4.5 5.3 12.4 4.8 12.3
15 90.0 78.0 70.9 310.0 4.8 5.1 4.9 4.7 4.1 12.5 4.6 7.6
16 4.2 289.1 18.6 37.1 7.8 5.1 4.3 4.7 4.0 6.2 4.2 3.8
17 3.5 10.9 5.7 51.8 7.1 4.9 4.3 4.9 4.3 7.7 3.2 4.3
18 3.4 10.6 10.8 9.0 52.9 4.8 4.3 4.7 4.7 14.1 3.7 11.6
19 3.9 8.4 4.5 6.5 6.5 5.4 4.7 4.8 4.8 5.2 3.9 10.5
20 4.6 6.1 4.5 8.1 5.1 5.1 4.3 4.9 6.9 6.9 3.9 4.2
21 3.2 4.6 4.3 6.0 4.8 5.2 4.7 5.0 65.2 4.5 4.2 5.4
22 3.1 9.1 4.4 7.5 4.5 4.8 4.2 5.1 26.1 7.3 3.5 20.8
23 3.4 26.5 4.8 26.4 3.9 5.8 4.3 5.0 171.3 5.1 3.6 20.7
24 3.4 10.7 11.1 - 4.3 12.1 4.7 5.0 5.7 10.6 4.0 4.5
25 3.6 5.6 5.7 4.4 4.4 7.0 4.7 4.9 6.0 6.1 4.1 3.9
26 3.5 5.2 5.0 4.4 52.7 12.5 4.6 4.8 5.9 9.1 3.8 4.5
27 3.4 5.0 15.8 4.7 9.1 12.7 4.6 5.1 57.7 23.9 3.5 4.0
28 3.5 5.0 5.0 5.5 5.4 13.1 4.7 4.9 3.7 7.1 3.7 4.0
29 3.6 4.5 4.6 - 5.3 4.7 5.2 4.4 6.4 4.4 3.2
30 3.7 4.8 9.0 4.9 4.8 4.7 5.0 5.4 4.7 4.9 3.5
31 3.8 4.8 65.9 4.6 4.6 7.7 3.4
Av: 14.8 51.8 12.6 21.6 19.8 6.3 22.9 4.8 21.6 13.6 14.2 12.7
| 1978 yearly mean = 17.8 s.f.u. (mean of 362 daily means) |
|
Daily Mean Flux Densities at 127 MHz in the Year 1979
Day Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec
1 - 4.5 8.1 5.5 56.8 41.8 6.8 6.0 8.9 17.3 8.6 4.5
2 - 3.6 7.5 5.7 6.1 - 10.3 6.7 - 5.6 6.5 6.5
3 - 3.8 7.4 80.6 6.9 - 7.0 6.7 6.0 5.7 5.6 4.3
4 - 3.7 6.1 8.9 7.7 7.3 242.1 6.3 8.0 6.0 22.0 3.3
5 15.3 3.8 5.9 21.1 7.2 8.1 7.5 5.5 9.4 24.4 5.5 3.9
6 4.9 3.7 5.7 6.5 6.2 5.7 7.8 6.4 - 17.9 15.9 4.2
7 4.0 3.8 5.5 5.8 6.0 5.8 112.9 6.5 21.7 5.5 10.7 4.1
8 4.2 16.4 8.4 6.2 6.3 5.4 7.0 5.2 4.4 8.8 76.3 4.5
9 4.5 5.1 6.4 6.2 5.9 13.4 7.7 4.4 4.5 21.6 54.9 3.8
10 7.9 5.0 5.1 6.0 5.9 35.5 6.4 7.0 4.6 19.7 65.9 3.8
11 6.6 4.9 5.9 6.5 5.2 60.7 6.4 5.9 4.5 11.2 27.2 4.2
12 23.6 101.1 5.2 5.5 5.1 368.6 5.8 4.9 5.0 5.0 - 3.4
13 11.5 6.2 5.1 5.8 5.0 628.3 6.6 15.2 4.7 86.1 4.9 5.4
14 8.0 4.9 4.3 5.3 5.5 110.7 6.3 30.1 249.2 - 3.5 5.9
15 3.5 6.3 6.6 5.1 6.4 11.8 9.0 - 9.3 - 4.9 4.5
16 4.3 6.5 4.6 4.8 - 5.2 5.9 - 4.4 5.3 6.7 4.1
17 3.8 28.4 4.0 5.3 5.8 4.9 6.3 - 4.1 3.9 25.4 4.7
18 4.2 318.3 5.6 5.3 5.5 5.3 6.4 15.1 4.3 4.7 - 5.7
19 4.7 98.4 4.1 5.6 5.3 7.2 7.3 6.1 3.9 4.2 - 4.3
20 3.8 35.2 4.4 5.8 9.3 7.2 5.7 5.8 3.9 3.2 4.4 8.9
21 4.4 9.5 4.9 5.6 5.1 5.4 7.2 4.9 3.5 3.4 5.3 5.6
22 3.9 20.4 5.2 7.0 5.3 5.6 5.7 18.1 3.6 29.5 3.4 4.1
23 5.2 8.9 5.7 5.6 5.2 5.1 5.8 5.7 4.5 47.2 6.2 4.4
24 4.5 5.6 8.8 15.7 6.1 4.9 9.1 4.6 3.6 9.3 6.6 4.4
25 11.5 6.2 5.7 7.7 5.2 5.8 5.6 4.2 4.2 6.5 5.9 5.0
26 3.4 6.2 11.5 6.3 5.5 8.2 8.4 5.0 7.5 11.0 5.2 3.9
27 7.0 5.7 6.3 12.6 5.8 5.4 9.4 5.0 7.0 5.0 4.3 3.4
28 15.3 6.3 5.2 7.0 - 5.2 6.3 4.1 7.7 - 4.1 3.2
29 19.3 4.9 7.3 5.0 5.4 5.9 4.3 13.0 - 3.6 3.6
30 5.8 5.6 6.6 5.8 15.5 6.2 4.9 30.1 - 4.5 3.8
31 22.2 5.1 13.5 6.3 5.1 13.2 3.8
Av: 8.0 26.2 6.0 9.6 7.9 50.0 18.0 7.5 15.9 14.7 14.7 4.5
| 1979 yearly mean = 15.1 s.f.u. (mean of 344 daily means) |
|
Daily Mean Flux Densities at 127 MHz in the Year 1980
Day Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec
1 4.2 11.6 3.8 5.0 6.3 - 2.7 3.3 9.5 4.6 18.3 8.5
2 4.0 20.4 3.9 7.1 7.5 - 2.8 3.7 8.6 4.6 88.4 7.3
3 4.4 46.2 4.1 53.0 48.8 4.6 2.0 3.6 - 5.3 21.1 6.8
4 7.9 - 4.0 10.8 61.3 27.7 - 4.5 4.7 6.3 9.1 15.3
5 7.3 10.6 4.1 59.3 - 149.7 - 3.4 3.1 6.9 10.0 7.0
6 72.9 7.1 3.9 38.2 46.8 32.8 7.5 3.7 4.2 7.9 11.6 7.1
7 26.3 3.4 4.4 290.4 4.9 16.8 - 5.1 2.0 8.7 24.7 7.8
8 12.3 4.1 5.1 507.9 4.3 6.2 - 4.1 2.7 4.1 - 6.8
9 3.6 4.9 4.1 13.0 6.0 118.2 4.5 4.6 2.2 6.6 - 7.2
10 7.5 21.7 4.0 26.1 17.1 7.6 3.6 5.0 3.9 2.7 - 7.3
11 4.0 76.3 4.4 24.4 5.4 5.7 4.8 6.2 4.4 4.1 6.8 7.1
12 4.7 198.9 4.0 17.7 7.9 3.7 4.8 4.6 4.5 8.0 8.0 17.8
13 3.9 200.9 3.9 9.5 4.4 4.3 - 4.5 3.0 4.3 11.5 10.9
14 3.8 23.6 3.4 13.0 4.5 5.9 - 5.8 2.9 20.0 10.0 9.1
15 4.4 8.1 3.7 7.5 4.9 5.2 11.1 4.2 2.7 3.4 7.3 50.2
16 4.5 6.2 3.7 5.4 4.4 - 22.2 4.2 3.1 9.9 11.0 45.7
17 3.9 - 3.9 5.9 9.3 4.7 113.3 5.0 4.0 6.5 6.0 119.9
18 3.6 - 3.6 4.6 - 5.2 51.4 6.0 4.8 6.0 6.0 39.5
19 4.4 3.6 5.1 4.1 4.0 3.3 12.6 9.2 4.5 8.4 10.4 7.3
20 4.2 3.9 3.6 4.3 4.9 3.6 10.0 6.8 4.4 10.9 6.8 8.4
21 28.5 4.0 3.9 4.7 4.2 14.8 5.8 15.3 4.5 7.0 6.9 7.6
22 8.8 3.6 4.3 7.9 4.9 3.2 20.1 - 4.9 5.3 6.8 14.9
23 11.6 3.5 3.9 4.1 8.3 4.0 19.5 13.5 6.5 6.7 5.6 21.2
24 5.9 3.9 3.8 - 15.2 3.1 3.3 6.2 6.4 44.6 5.7 8.4
25 5.9 3.5 4.2 4.6 485.0 3.3 3.3 6.9 6.4 6.8 6.5 6.0
26 3.2 3.5 4.8 4.8 40.4 3.5 3.5 10.1 6.3 7.0 7.6 2741.4
27 55.2 3.4 22.5 13.1 109.7 4.3 3.2 7.7 5.5 6.5 7.1 1683.8
28 2.9 3.4 4.3 12.5 97.2 3.5 3.6 5.6 4.6 5.3 11.1 19.2
29 2.8 3.8 4.7 5.0 84.4 3.1 3.5 - 5.0 6.8 7.9 7.4
30 2.8 13.0 5.8 20.3 3.1 3.9 9.9 5.1 8.8 9.3 7.4
31 3.3 4.9 15.1 3.2 19.5 - 6.4
Av: 10.4 26.3 5.0 40.3 39.2 16.7 13.1 6.6 4.6 8.1 12.6 158.7
| 1980 yearly mean = 29.3 s.f.u. (mean of 344 daily means) |
|
Daily Mean Flux Densities at 127 MHz in the Year 1981
Day Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec
1 7.3 7.6 24.3 6.4 6.9 - 4.6 11.4 6.3 8.6 10.0 10.2
2 7.2 8.0 74.4 5.8 7.7 3.7 3.7 4.5 7.6 5.0 - 13.6
3 6.4 8.7 45.0 18.5 9.8 - 3.2 4.1 7.2 5.9 301.7 6.8
4 7.7 6.5 62.7 7.7 10.8 - 4.4 3.7 12.9 5.3 119.4 5.9
5 11.8 20.8 8.6 5.6 23.7 3.6 3.3 2.9 7.3 5.4 - 7.2
6 3.6 90.1 7.6 5.7 7.0 3.4 3.0 15.3 9.9 4.9 48.1 8.0
7 10.0 35.0 7.3 5.9 5.6 4.1 3.4 51.0 5.2 5.0 156.7 7.5
8 11.9 11.9 5.8 7.3 6.4 3.2 4.1 14.5 5.6 6.1 - 8.0
9 15.7 7.7 5.7 8.2 9.0 3.2 4.6 125.8 6.5 6.6 - 3.6
10 30.4 13.5 5.4 156.3 5.1 3.6 3.4 10.9 7.5 10.9 - 7.5
11 27.0 38.3 6.5 6.3 5.2 3.7 4.8 6.5 8.2 12.1 70.2 9.1
12 8.8 13.0 6.1 14.3 7.1 4.4 - 4.2 13.8 62.3 244.6 42.1
13 7.3 6.6 6.3 75.2 4.2 5.7 - 4.6 14.8 193.8 98.8 4.3
14 7.3 6.8 16.1 9.7 7.7 12.3 28.0 3.8 9.6 273.4 8.7 14.5
15 6.7 7.3 6.6 85.1 8.8 7.4 5.4 4.2 9.9 96.2 5.9 11.9
16 6.8 118.6 9.0 9.8 153.4 27.4 6.8 5.9 11.8 13.8 5.4 7.2
17 7.2 6.3 5.8 13.2 21.5 8.2 - 10.2 10.0 79.7 9.5 6.3
18 7.2 6.1 6.0 10.1 - - 5.0 31.4 - 346.5 14.4 6.8
19 8.4 8.0 16.8 15.1 27.8 5.0 - 250.6 - 48.4 15.3 6.3
20 7.6 7.4 28.6 6.2 - 4.6 - 76.8 - 32.5 6.8 6.6
21 7.1 5.6 12.2 6.6 - 4.2 13.1 134.2 5.4 16.0 6.1 6.3
22 6.6 6.1 4.5 8.0 - 4.2 - 5.6 4.9 9.8 6.1 6.6
23 6.3 7.3 10.2 7.3 - 19.9 58.3 6.6 6.6 7.2 5.0 6.7
24 5.8 9.3 24.6 29.4 - 146.8 27.9 6.6 - 7.1 4.7 6.0
25 6.1 6.9 21.3 6.1 - 173.8 71.6 5.1 4.8 7.3 7.4 6.2
26 6.1 9.6 7.1 40.5 4.3 67.0 60.4 5.0 5.2 6.8 7.1 6.2
27 5.0 225.4 9.8 7.5 - 6.6 9.8 5.5 4.9 5.8 6.7 30.7
28 6.3 39.8 5.5 5.6 4.3 4.0 7.5 5.2 4.9 6.2 7.1 17.9
29 8.8 6.8 7.0 4.3 4.1 4.6 6.1 6.0 6.3 7.2 6.6
30 10.9 6.0 7.2 4.3 6.4 - 5.9 6.3 7.0 47.6 5.9
31 10.2 5.4 3.8 11.8 6.4 8.3 6.7
Av: 9.2 26.4 15.1 19.9 15.2 20.8 14.7 26.9 7.8 42.3 48.8 9.7
| 1981 yearly mean = 21.4 s.f.u. (mean of 337 daily means) |
|
Daily Mean Flux Densities at 127 MHz in the Year 1982
Day Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec
1 7.2 227.5 167.9 3.7 6.4 3.8 3.6 4.8 5.4 6.8 - 7.4
2 8.7 801.6 11.8 5.8 - 3.7 3.3 - 6.3 - - 125.0
3 - 203.6 6.6 5.0 - 5.5 2.7 4.2 6.1 - - 6.9
4 6.8 17.4 - 6.2 4.6 4.1 4.4 4.9 5.3 - 3.7 49.6
5 5.6 69.0 6.7 4.5 6.3 3.3 4.1 - 4.6 - 4.7 36.0
6 7.3 48.2 5.4 4.6 29.6 4.0 3.7 3.8 3.8 6.1 5.8 54.8
7 6.8 46.5 5.2 5.5 7.3 - 3.8 - 4.4 5.8 5.3 90.6
8 7.6 52.8 5.1 8.1 9.7 - 4.1 - 4.3 5.5 5.2 68.2
9 7.2 15.0 4.9 8.0 4.8 6.1 9.7 - 15.5 - 5.2 32.9
10 6.7 364.2 4.2 8.1 4.7 8.2 3.4 5.8 4.3 - 4.8 25.7
11 6.8 24.2 5.4 8.5 6.3 12.6 3.3 5.3 - - 6.3 502.9
12 - 6.7 6.1 7.0 5.0 48.3 375.9 4.7 - - 144.7 266.5
13 6.1 7.2 6.7 6.7 3.8 7.5 22.9 4.9 - 5.9 32.5 749.8
14 5.7 41.1 8.7 6.2 4.2 9.0 24.1 - - 4.6 102.4 192.5
15 9.1 6.5 10.7 5.8 4.5 12.6 5.3 - 4.9 5.5 161.8 28.8
16 7.2 25.0 166.0 5.0 - 9.4 4.6 - 4.4 6.5 11.4 -
17 22.2 22.5 133.5 7.2 - 156.7 - 4.1 5.6 6.5 6.5 -
18 16.1 67.9 64.5 - 4.3 20.6 - 5.1 4.4 5.1 7.4 -
19 146.3 1761.5 67.1 - 5.2 - - 5.4 - - 21.7 -
20 5.6 528.6 29.9 6.6 - 15.1 - 9.4 15.4 6.4 5.6 -
21 - 41.9 19.3 6.5 4.2 34.3 - 5.2 3.6 3.7 18.4 -
22 7.1 11.2 12.0 27.6 - 28.2 - 4.9 4.5 4.8 17.5 -
23 6.1 11.7 10.3 27.9 - 83.8 - 3.8 4.5 5.5 7.4 5.7
24 6.3 8.5 13.8 8.2 4.1 10.2 3.4 4.3 3.7 8.4 5.6 -
25 6.2 38.8 12.5 5.2 4.3 6.2 3.2 4.8 - 6.5 6.4 -
26 - 13.2 35.0 5.8 4.3 - 4.0 15.3 - 5.8 7.5 215.0
27 5.1 23.8 16.1 6.5 5.3 - 4.1 35.5 4.8 5.7 5.5 477.7
28 9.3 56.5 5.1 5.7 4.3 2.5 4.2 29.8 21.0 28.7 5.6 255.0
29 16.4 6.4 6.2 5.0 3.4 4.1 10.6 19.0 7.2 6.4 60.4
30 314.1 13.4 6.8 4.2 3.7 3.8 5.1 13.0 - 24.8 7.4
31 411.0 6.3 4.6 2.6 5.6 - 6.3
Av: 39.7 162.2 28.9 7.8 6.1 20.1 21.2 8.1 7.3 7.0 23.7 148.4
| 1982 yearly mean = 40.7 s.f.u. (mean of 301 daily means) |
|
Daily Mean Flux Densities at 127 MHz in the Year 1983
Day Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec
1 7.2 7.2 5.8 3.6 6.0 3.7 3.8 25.5 4.4 6.3 - 6.1
2 7.2 4.9 6.0 3.8 8.7 4.0 3.7 9.9 4.0 5.0 - 6.1
3 7.2 67.0 6.7 - - 4.1 - 7.7 4.2 3.7 4.7 6.2
4 - 93.4 14.7 - - 4.2 3.6 5.0 4.7 3.7 4.8 5.4
5 8.7 155.0 - 5.6 10.8 - 4.2 4.5 4.2 5.5 5.8 4.5
6 6.1 79.3 - 4.8 6.1 - 4.2 3.8 4.2 3.6 - 4.5
7 12.3 6.2 - 6.7 - 32.1 - - 4.2 5.1 - 5.5
8 - 9.2 4.8 4.0 - 81.5 3.8 - 4.6 - 6.7 9.5
9 6.4 6.4 83.3 4.8 - 33.3 - - 4.0 - 5.9 4.7
10 7.2 7.0 7.0 3.9 3.9 76.3 - - 3.5 3.6 4.5 -
11 6.2 9.2 5.2 4.4 17.3 - - - 3.5 3.8 - -
12 4.7 5.5 3.8 4.6 21.3 - - - 3.4 3.7 5.3 -
13 6.0 5.6 3.4 5.4 19.9 4.5 4.2 - 3.6 3.4 5.1 -
14 6.4 5.0 3.7 6.2 - 4.2 3.7 - 3.5 3.8 5.6 6.0
15 6.1 5.9 3.5 5.4 - 4.8 3.7 - 6.4 10.3 6.3 6.7
16 5.6 5.3 3.9 4.8 - 4.8 4.2 - 5.3 3.4 5.0 6.2
17 5.3 4.9 4.7 10.9 5.1 5.3 4.0 - 4.1 4.1 - 4.3
18 6.2 5.6 4.7 7.9 - - 4.2 - 4.4 4.3 5.1 5.6
19 7.4 5.5 5.6 4.8 5.1 - 4.0 - 4.4 3.8 4.9 4.2
20 5.7 - - 6.3 14.7 - 5.0 - 3.9 4.1 - 4.8
21 5.6 - 2.4 4.8 64.7 3.7 4.5 - 4.0 3.7 - 4.5
22 5.2 - 7.6 4.0 280.2 4.0 - - 6.7 3.7 4.8 5.6
23 4.1 5.6 5.6 4.3 5.8 4.1 - 4.7 10.3 3.3 4.5 3.8
24 3.5 5.8 5.1 - 4.5 - - 4.3 - 3.9 5.5 5.2
25 - 5.9 5.1 - 4.1 - 4.2 4.1 - 3.4 4.9 5.3
26 - - 3.6 5.6 3.8 4.0 3.8 4.5 3.9 3.7 5.6 4.5
27 3.5 - 4.7 4.0 4.3 4.0 4.0 3.8 3.9 3.8 3.6 4.1
28 4.8 - 4.6 6.2 3.9 5.0 4.5 4.2 8.8 3.8 5.2 5.3
29 3.6 5.1 4.3 - 4.1 9.9 4.2 15.7 - 3.6 4.7
30 4.4 - 4.8 4.2 3.6 - 4.4 7.8 - 6.7 5.6
31 4.5 3.7 4.1 - 4.4 - 5.2
Av: 6.0 23.0 8.2 5.2 23.7 14.1 4.4 6.3 5.2 4.3 5.2 5.3
| 1983 yearly mean = 8.9 s.f.u. (mean of 281 daily means) |
|
Daily Mean Flux Densities at 127 MHz in the Year 1984
Day Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec
1 5.3 133.3 5.3 15.4 74.9 4.9 6.1 3.8 5.5 4.9 - 6.0
2 - - 5.3 181.7 27.1 5.5 6.0 4.8 4.2 5.0 3.7 5.7
3 - 5.2 4.7 167.7 9.9 4.0 6.2 3.7 5.3 4.7 4.3 7.5
4 8.4 6.7 4.2 60.8 5.1 4.0 6.4 3.8 5.3 4.1 - -
5 4.2 5.2 3.5 970.2 - 3.6 6.9 3.7 3.8 4.2 5.4 7.3
6 5.0 4.6 5.7 20.7 - 4.8 6.2 4.0 4.4 5.3 4.8 6.5
7 - 4.5 - 4.6 3.8 8.2 6.1 3.4 5.5 4.1 5.0 6.6
8 4.6 31.3 - 12.0 3.7 6.7 4.1 4.1 3.4 - 4.5 -
9 3.6 17.2 - - 3.7 5.4 - 3.8 - 5.0 5.0 -
10 4.1 18.8 3.5 4.4 3.5 - - 3.6 3.6 4.6 7.4 -
11 3.6 24.3 - - 10.1 4.6 - - 5.5 - 6.2 31.1
12 32.4 9.1 4.2 - 11.9 4.2 - - 4.9 5.2 19.6 7.5
13 5.2 - 4.7 28.1 - - - - 4.5 4.0 6.0 6.2
14 - 6.5 4.2 - 187.7 - - 3.6 4.5 3.8 6.0 5.3
15 - 5.5 - - 6.2 11.6 - 4.7 3.8 3.9 7.0 4.7
16 - 5.6 6.0 - 5.8 12.8 - - 4.4 5.0 5.4 4.0
17 12.4 4.9 - 657.5 5.4 19.3 7.4 4.9 4.4 5.0 5.6 4.0
18 4.0 5.3 - 35.3 3.7 73.5 3.8 6.4 3.9 5.0 5.9 5.2
19 4.3 5.0 - 16.0 3.7 58.6 3.4 4.6 4.3 3.1 6.8 -
20 4.6 5.9 3.6 11.1 - 8.7 4.4 3.8 3.1 3.4 8.0 5.0
21 4.6 6.0 4.1 7.0 4.3 6.0 4.4 4.6 4.0 4.7 10.0 5.1
22 4.5 9.4 5.2 3.5 6.3 4.4 6.0 3.9 3.4 5.2 5.5 5.2
23 7.7 - 3.4 - 28.4 4.6 6.4 3.5 4.3 4.2 4.9 5.0
24 13.9 66.7 3.8 - 5.3 4.0 6.0 2.9 4.4 7.2 - 5.3
25 6.2 5.7 3.3 13.2 4.1 9.4 3.4 4.1 4.1 4.8 15.9 4.6
26 11.6 44.5 3.7 - 5.7 9.4 3.7 5.2 3.9 4.9 4.6 -
27 31.8 7.5 4.3 108.6 - 7.3 4.2 5.2 3.9 4.9 5.0 -
28 5.8 5.0 4.5 125.5 4.3 7.4 4.2 4.2 4.5 5.8 5.2 -
29 22.8 4.7 3.7 31.2 3.4 7.6 4.1 4.6 3.3 - 6.1 -
30 - 6.9 46.1 3.6 7.0 3.6 4.8 3.7 6.2 7.7 6.4
31 893.2 3.2 4.0 3.3 3.9 - 5.2
Av: 46.0 17.3 4.4 120.0 16.7 11.4 5.1 4.2 4.3 4.7 6.7 6.8
| 1984 yearly mean = 19.0 s.f.u. (mean of 302 daily means) |
|
Daily Mean Flux Densities at 127 MHz in the Year 1985
Day Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec
1 5.8 4.9 5.4 3.3 9.5 - - - - - - -
2 5.1 4.4 5.4 3.5 9.2 - - - - - - -
3 5.5 4.1 5.0 5.5 - - - - - - - -
4 4.7 - 4.7 3.3 - - - - - - - -
5 3.5 - 4.4 4.2 - - - - - - - -
6 2.5 - 4.3 3.9 - - - - - - - -
7 2.9 - 4.4 - - - - - - - - -
8 2.9 4.2 4.4 - - - - - - - - -
9 4.1 3.2 4.7 - - - - - - - - -
10 3.8 - 4.4 4.8 - - - - - - - -
11 5.1 - - 4.5 5.9 - - - - - - -
12 4.6 4.1 4.9 4.3 17.5 - - - - - - -
13 3.8 4.2 4.6 3.7 15.3 - - - - - - -
14 3.6 4.6 4.3 4.3 14.8 - - - - - - -
15 5.0 4.6 4.6 3.7 - - - - - - - -
16 4.3 4.6 4.3 3.5 - - - - - - - -
17 5.1 4.1 - 2.8 - - - - - - - -
18 3.8 - - 3.4 - - - - - - - -
19 5.7 5.8 5.0 3.6 - - - - - - - -
20 5.2 9.4 5.5 2.8 4.6 - - - - - - -
21 5.1 5.9 11.7 3.2 - - - - - - - -
22 9.8 5.3 6.4 3.9 - - - - - - - -
23 - 4.9 5.0 3.6 4.5 - - - - - - -
24 6.3 4.6 4.7 - - - - - - - - -
25 4.6 4.5 - 41.9 - - - - - - - -
26 4.3 5.3 4.7 - - - - - - - - -
27 4.5 5.7 4.1 34.8 - - - - - - - -
28 4.4 5.8 5.9 6.2 - - - - - - - -
29 4.5 5.1 5.6 - - - - - - - -
30 4.4 5.1 5.5 - - - - - - - -
31 4.6 4.2 - - - - -
Av: 4.6 5.0 5.1 6.8 10.2 - - - - - - -
| 1985 yearly mean = 5.7 s.f.u. (mean of 111 daily means) |
|
Daily Mean Flux Densities at 127 MHz in the Year 1986
Day Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec
- - - - - - - - - - - - -
| There were no observations in 1986 |
|
Daily Mean Flux Densities at 127 MHz in the Year 1987
Day Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec
1 - - - - - - 5.4 4.2 6.3 - - 4.7
2 - - - 3.4 - 4.9 5.3 3.5 7.5 6.0 - 5.5
3 - - - - - - 4.6 3.8 6.4 - 24.4 4.8
4 - - - - - 3.5 4.7 4.2 13.1 - 14.9 5.5
5 - - - - - 3.9 4.2 4.2 12.3 - 17.0 7.0
6 - - - - - 4.2 3.8 4.2 7.6 - 10.7 6.0
7 - - - 50.5 - - 4.3 4.2 5.1 - 10.0 6.6
8 - - - - - - 3.8 - 5.1 - 8.9 9.5
9 - - - 13.8 - 4.6 5.4 5.9 - - 8.4 7.5
10 - - - - - - 6.2 6.3 4.3 - 10.1 7.5
11 - - - - - - - 5.5 3.6 - 6.5 7.4
12 - - - - - - - 5.1 3.6 6.1 5.9 7.0
13 - - - - - - - 5.8 3.6 6.4 6.7 8.8
14 - - - 4.6 - - - 21.5 3.6 55.1 5.6 9.3
15 - - - 6.2 - - 4.7 10.5 4.4 12.5 6.8 9.4
16 - - - 9.4 - - 5.1 11.7 3.8 47.0 5.4 7.4
17 - - - 52.7 - - 4.3 7.7 5.3 - 5.8 8.4
18 - - - 32.4 - - 4.9 7.7 5.7 - 7.0 8.4
19 - - - 4.8 - - 5.0 21.2 - - 5.9 5.8
20 - - - 4.4 - - - 7.2 - - 5.1 7.1
21 - - - 4.0 - - 4.6 45.2 - - 5.9 8.9
22 - - - 3.0 - 4.7 4.2 - 4.8 - 7.7 6.7
23 - - - 3.2 - - 4.2 - - 7.8 7.0 10.4
24 - - - 11.8 - - 72.6 - - 7.9 6.9 8.9
25 - - - - - 3.4 4.1 7.9 - 6.9 5.0 10.0
26 - - - 4.4 - 3.7 4.2 5.9 - 8.2 29.0 6.6
27 - - - 4.4 - 4.1 5.5 5.7 - 7.4 5.4 18.9
28 - - - 3.1 - 4.2 3.9 - 5.1 - 5.2 43.7
29 - - 4.6 - 3.9 4.2 - 4.7 10.0 6.8 -
30 - - 4.8 - 4.5 2.7 7.9 - 20.1 7.8 24.8
31 - - - 3.8 8.0 - 32.0
Av: - - - 11.9 - 4.1 7.1 9.0 5.8 15.5 9.0 10.5
| 1987 yearly mean = 9.1 s.f.u. (mean of 173 daily means) |
|
Daily Mean Flux Densities at 127 MHz in the Year 1988
Day Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec
1 113.8 6.9 6.6 68.0 - 6.1 - 400.8 - 313.5 18.6 6.0
2 8.2 7.0 5.9 78.3 - 6.1 - 419.8 - 10.0 18.7 17.4
3 8.4 18.6 6.2 65.4 - 6.3 - 117.2 - 26.8 18.2 8.9
4 6.7 6.2 4.6 19.8 7.6 26.3 54.2 343.6 - - 16.7 8.7
5 7.7 6.1 5.0 10.8 7.6 - 23.2 61.2 - 12.5 965.9 9.8
6 5.7 5.6 5.4 8.0 7.9 5.4 12.6 16.9 - 21.0 84.2 12.9
7 7.0 6.1 5.9 9.3 6.1 9.7 17.5 9.2 - 202.0 28.7 20.1
8 7.5 5.0 5.8 7.2 - 9.6 115.2 189.4 - 519.5 578.0 9.4
9 6.2 4.3 5.2 6.6 5.9 - 90.2 18.9 - 12.0 218.0 10.4
10 - 5.6 5.8 - 6.1 8.4 - 10.9 - 32.2 12.5 54.7
11 4.3 5.5 4.4 - 4.4 - - 14.3 - 7.7 10.9 82.0
12 8.4 6.4 4.1 6.8 - - 16.1 7.0 - 5.2 12.2 68.8
13 6.5 5.2 6.2 45.3 5.5 5.5 13.3 7.4 - 6.5 20.8 56.2
14 6.3 6.1 7.5 21.1 5.5 5.8 9.0 6.9 - 5.5 12.2 -
15 6.8 5.1 5.4 9.9 6.0 5.9 9.6 - - 5.2 10.8 45.3
16 - 4.9 5.1 - 6.4 4.3 181.9 8.7 - 7.7 48.0 171.0
17 - 6.4 4.9 12.1 7.6 7.6 1771.2 9.7 - 7.3 9.9 69.7
18 6.0 5.5 4.8 9.8 11.3 58.2 2630.7 18.4 - 6.8 31.0 43.0
19 35.5 8.4 15.2 - 6.7 54.1 1918.6 12.5 - 18.2 24.9 65.4
20 7.9 15.5 14.9 - - 23.0 649.4 6.2 - 15.5 23.8 63.9
21 7.2 7.8 8.5 - 6.2 157.2 965.1 8.3 - 9.1 - 135.4
22 5.6 3.8 7.9 7.3 - 9.2 14.8 - - 13.0 - 29.3
23 6.5 6.4 8.6 - 8.9 11.0 12.5 - 9.8 19.4 - 21.5
24 3.9 5.9 7.0 - 6.3 4.5 16.8 - 12.3 23.8 - 17.0
25 5.0 5.6 8.6 - 19.8 7.3 20.9 - 9.9 72.8 - 35.3
26 3.7 5.1 7.2 - 10.0 7.0 16.4 - 14.5 26.7 - 16.1
27 4.8 5.4 - 6.6 18.7 7.0 11.8 - 180.4 16.6 - 188.0
28 11.4 5.7 7.4 7.7 34.7 30.1 20.6 - 8.0 15.9 - 36.6
29 5.8 14.4 25.7 8.9 39.7 197.7 169.7 - 7.1 14.1 - 20.9
30 7.4 26.9 12.5 8.1 - 120.4 - 6.8 17.1 - 15.2
31 5.1 74.7 8.9 67.6 - 21.0 20.8
Av: 11.4 6.9 10.4 21.1 10.7 26.9 344.2 84.4 31.1 49.5 108.2 45.3
| 1988 yearly mean = 62.3 s.f.u. (mean of 290 daily means) |
|
Daily Mean Flux Densities at 127 MHz in the Year 1989
Day Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec
1 57.9 - 30.0 46.6 6.1 7.0 4.3 6.1 14.8 5.9 5.7 -
2 655.9 3.7 7.2 5.1 6.3 9.7 5.6 6.5 71.8 3.6 7.5 -
3 39.2 4.6 12.3 6.7 71.9 10.4 4.5 9.3 1044.2 3.2 7.5 -
4 34.0 25.6 6.8 119.9 9.3 6.9 5.0 9.7 51.0 10.9 4.9 -
5 61.3 8.8 7.6 3.9 747.6 6.5 5.4 31.3 13.2 5.6 15.9 -
6 19.7 2.2 42.8 11.3 7.5 5.1 5.3 35.4 6.1 7.1 86.5 117.0
7 35.4 3.1 18.1 8.0 10.3 7.8 6.1 807.2 5.9 10.2 42.9 64.7
8 24.8 3.6 48.9 7.1 55.0 19.6 6.0 270.9 5.1 - 36.5 59.1
9 812.7 3.8 329.9 14.2 6.8 14.3 9.4 1908.0 12.3 17.4 14.7 33.5
10 209.1 17.6 489.9 8.8 8.0 7.3 7.1 799.4 20.8 16.6 10.4 -
11 10.9 4.9 - 23.2 7.6 375.7 6.4 732.5 23.0 7.1 10.0 -
12 7.2 4.1 - 14.6 7.8 78.7 6.6 153.1 25.7 9.3 15.2 6.9
13 77.3 10.5 1667.2 11.5 6.7 91.6 6.5 159.6 340.9 22.5 8.7 7.0
14 9.8 46.0 2517.4 10.6 6.0 28.3 7.7 70.5 44.8 14.4 8.0 10.8
15 12.4 126.5 2044.7 14.7 9.1 39.2 7.3 12.5 13.7 15.0 20.0 10.7
16 126.7 5.0 588.4 66.3 13.3 506.0 6.2 21.4 13.7 9.4 110.4 9.9
17 26.9 4.6 36.3 243.9 6.4 22.0 6.9 230.0 7.6 503.8 9.9 12.3
18 21.9 8.7 19.6 364.9 7.3 24.3 8.0 164.0 7.4 137.1 8.5 113.5
19 6.1 7.2 18.1 47.3 10.9 160.3 6.4 32.3 7.2 387.6 10.5 53.5
20 6.2 5.8 15.0 24.3 12.4 14.1 5.8 47.6 6.0 7.7 11.3 10.5
21 7.2 5.0 318.0 11.9 13.5 10.3 6.6 97.0 5.2 7.4 10.8 -
22 5.0 6.7 196.5 7.4 27.3 7.6 7.0 8.5 9.8 8.1 6.5 8.0
23 14.6 8.4 43.1 - 67.0 22.8 15.7 8.5 6.3 7.3 9.0 10.3
24 7.6 4.2 62.8 15.8 259.7 23.9 16.8 19.3 4.6 6.4 8.3 8.9
25 28.8 7.6 49.4 11.6 41.8 121.2 13.4 10.7 - 5.1 - 10.5
26 271.1 7.7 13.3 63.0 10.1 288.7 6.8 8.2 4.9 4.5 - 29.6
27 183.0 85.9 14.6 39.1 6.9 117.4 5.4 6.8 13.3 6.6 13.5 312.8
28 56.3 41.0 9.8 22.1 10.4 7.6 6.2 7.0 5.1 6.9 - 406.8
29 5.7 9.0 8.4 8.8 4.9 4.7 27.2 121.6 6.7 - 18.5
30 4.5 22.7 6.4 18.5 5.0 5.0 6.6 3.9 7.2 - 12.9
31 4.8 14.4 7.6 4.1 18.7 8.5 20.6
Av: 91.7 17.1 298.4 42.7 48.0 68.1 7.0 184.7 65.8 42.3 19.7 58.6
| 1989 yearly mean = 80.0 s.f.u. (mean of 346 daily means) |
|
Daily Mean Flux Densities at 127 MHz in the Year 1990
Day Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec
1 - 19.1 23.1 6.8 6.5 7.0 8.1 13.5 6.4 8.8 4.8 13.0
2 5.5 156.8 21.3 8.5 6.3 6.9 126.5 6.9 6.1 8.2 5.0 9.3
3 6.6 7.5 11.5 7.7 6.8 7.4 83.1 4.9 5.6 58.9 6.2 11.2
4 10.3 7.9 10.5 7.1 6.5 6.6 19.1 6.1 11.2 13.7 4.1 7.3
5 7.1 9.7 7.0 7.6 7.2 21.5 1287.0 6.1 8.3 23.9 4.6 9.9
6 8.5 8.9 7.8 7.4 6.1 5.0 1046.7 6.2 13.1 6.6 6.2 13.6
7 7.7 8.6 7.5 8.0 11.4 5.1 470.0 6.1 4.5 6.9 4.5 13.6
8 11.6 7.4 7.4 8.8 198.5 5.7 34.2 5.1 4.8 10.1 7.2 15.0
9 13.5 - 10.7 7.2 116.7 6.6 12.1 8.0 4.0 6.8 14.0 9.0
10 7.9 - 6.2 7.6 14.1 1124.9 9.2 4.0 3.3 5.6 17.4 7.1
11 9.0 - 7.5 6.9 11.4 206.0 4.7 7.3 3.5 8.0 8.7 8.8
12 5.8 215.0 9.6 6.7 36.2 103.3 5.2 5.0 4.0 7.3 5.5 12.0
13 6.6 198.4 11.2 11.0 10.9 8.0 9.0 9.6 17.3 7.2 9.3 -
14 - 68.6 18.0 10.4 9.3 6.9 5.0 6.9 6.6 11.5 6.3 -
15 6.5 7.8 103.6 7.3 32.5 5.4 4.2 5.9 6.2 6.1 9.5 -
16 5.3 5.6 8.7 8.1 27.5 6.4 6.0 6.5 4.5 8.0 21.2 -
17 6.2 7.4 7.9 7.5 57.6 5.2 8.5 15.9 12.2 6.4 53.3 29.4
18 5.6 5.8 17.4 33.8 346.0 5.4 4.3 9.6 10.9 11.1 212.3 382.6
19 7.1 7.8 10.2 9.3 1376.1 6.1 3.8 10.2 7.7 6.1 282.5 617.2
20 7.5 7.3 9.4 9.1 17.9 7.3 3.9 40.1 10.3 6.2 61.3 81.1
21 5.7 11.0 11.3 8.4 31.1 6.4 6.0 9.1 9.5 10.7 83.1 9.8
22 6.0 8.1 6.8 11.3 25.2 8.5 4.2 72.5 10.7 9.0 97.5 9.3
23 7.3 10.2 6.9 - 22.2 7.7 4.2 211.7 10.8 73.5 661.3 10.7
24 5.0 15.9 8.0 6.6 45.4 6.5 1.4 1002.0 8.6 14.2 56.6 103.8
25 6.9 9.9 7.7 7.2 11.0 9.0 4.6 72.7 6.2 28.6 10.0 14.6
26 11.1 22.9 8.2 7.0 11.2 16.7 7.3 15.8 3.8 10.1 8.3 30.7
27 5.0 177.7 8.0 5.7 8.9 137.7 5.0 17.0 4.4 8.6 17.9 27.8
28 6.6 13.0 17.3 9.1 10.7 184.1 5.7 11.0 5.4 - 52.6 11.6
29 5.2 8.5 7.6 8.1 256.6 6.5 92.3 5.0 6.3 27.5 7.4
30 5.2 8.0 7.2 9.9 12.1 22.2 46.6 8.4 10.2 11.4 14.0
31 11.0 6.0 9.7 6.8 8.8 8.8 8.1
Av: 7.3 40.7 13.3 8.9 80.6 73.4 104.0 56.2 7.4 13.6 59.0 55.1
| 1990 yearly mean = 43.7 s.f.u. (mean of 354 daily means) |
|
Daily Mean Flux Densities at 127 MHz in the Year 1991
Day Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec
1 6.9 18.4 9.7 10.6 - 119.9 8.4 61.0 9.5 10.9 - 17.2
2 4.7 21.0 15.0 8.5 - 19.7 5.6 26.2 6.4 - - 8.0
3 9.8 16.3 9.5 10.0 - 9.9 5.7 78.5 6.5 8.4 - 9.1
4 7.6 35.2 10.7 9.8 - 40.4 6.5 58.4 6.7 9.6 15.5 12.4
5 9.8 16.7 10.8 9.2 - 12.2 5.7 13.1 6.0 5.9 10.6 8.3
6 6.6 23.2 10.3 - 6.0 315.6 5.8 124.4 5.3 6.7 16.6 4.8
7 12.6 12.5 111.8 9.3 6.0 161.1 8.0 97.4 12.3 6.3 10.1 6.9
8 9.3 11.4 14.7 8.8 14.0 22.7 13.2 18.9 26.3 6.6 8.1 29.3
9 11.9 10.1 53.2 10.4 851.6 106.4 10.2 6.5 6.7 6.0 7.9 22.8
10 14.2 13.3 47.7 7.4 146.1 37.5 399.8 6.5 10.5 6.3 7.2 16.2
11 11.6 9.8 8.6 7.8 11.8 657.8 25.2 6.7 21.8 6.8 7.6 37.6
12 11.2 12.2 22.6 8.2 22.5 38.7 10.9 5.5 6.3 5.9 6.9 52.9
13 12.2 13.7 27.2 8.7 8.3 27.2 6.0 6.9 6.8 5.1 7.2 13.6
14 15.5 12.5 19.1 8.6 5.1 9.3 7.2 7.4 6.6 4.3 12.2 188.3
15 9.4 12.6 33.6 8.7 7.1 426.1 11.9 5.8 7.0 4.4 7.1 162.4
16 10.5 11.7 175.1 11.5 25.1 12.3 8.8 10.8 5.3 7.7 10.4 378.2
17 12.2 11.3 42.8 8.3 9.1 6.8 10.3 9.3 6.2 15.4 9.1 292.5
18 45.1 17.2 80.8 9.3 11.4 5.4 11.1 10.8 4.0 26.6 6.2 62.7
19 9.3 42.3 14.2 10.6 31.4 7.2 8.9 7.5 3.8 9.4 7.6 25.2
20 16.0 190.6 13.3 47.4 8.5 6.4 8.5 7.3 5.3 9.2 6.7 22.6
21 13.2 9.9 1245.9 6.5 13.7 8.4 8.9 8.9 5.3 7.4 18.6 8.5
22 16.0 347.5 929.8 6.4 12.5 6.6 848.6 9.3 6.7 9.5 7.6 12.7
23 10.2 211.6 871.1 6.9 9.7 7.6 58.3 6.0 5.3 9.5 5.1 18.5
24 9.5 41.3 1136.4 7.8 7.8 7.3 519.2 5.6 5.3 8.2 8.2 37.0
25 8.5 9.8 598.0 8.4 9.7 7.1 90.4 5.1 6.5 598.2 8.2 43.6
26 8.0 9.7 2174.3 10.6 30.0 7.7 17.9 6.2 13.5 17.9 7.4 35.2
27 10.6 10.7 2403.9 9.8 10.8 6.1 20.6 5.9 5.0 114.5 19.0 26.9
28 11.6 9.9 68.4 8.4 48.5 7.3 21.5 4.7 4.4 16.5 8.9 72.0
29 5.3 13.3 18.4 112.2 9.1 7.6 5.4 18.2 8.9 24.5 51.3
30 7.8 12.7 10.0 116.9 5.0 6.0 8.4 161.7 73.3 13.7 684.6
31 15.5 14.7 49.4 6.9 6.6 12.3 8.1
Av: 11.7 41.5 329.0 10.6 61.0 70.5 70.4 20.7 13.4 34.6 10.3 76.4
| 1991 yearly mean = 63.8 s.f.u. (mean of 355 daily means) |
|
Daily Mean Flux Densities at 127 MHz in the Year 1992
Day Jan Feb Mar Apr May June July Aug Sep Oct Nov Dec
1 6.6 35.2 8.8 10.9 8.6 5.2 4.5 6.0 7.3 8.4 332.0 7.5
2 6.5 12.4 8.9 9.6 6.9 5.3 5.2 9.3 7.3 8.5 71.4 10.3
3 8.5 352.9 8.1 14.6 36.8 4.7 8.4 10.7 11.1 7.5 29.8 5.9
4 27.0 33.8 4.8 15.0 8.0 5.3 7.7 16.7 10.5 6.4 7.3 6.5
5 11.0 289.7 5.9 8.4 9.5 5.5 8.0 11.2 7.0 14.1 8.4 7.0
6 11.0 268.0 6.2 9.2 10.7 5.9 9.2 9.6 215.9 7.7 47.9 7.4
7 57.1 86.7 7.1 - 8.3 7.8 8.7 17.2 9.0 7.6 20.5 7.0
8 41.0 7.5 7.0 - 7.0 47.0 9.9 8.9 5.9 7.4 7.4 7.5
9 10.5 7.7 7.3 - 6.9 8.8 10.2 - 5.3 7.2 6.5 6.4
10 10.7 13.7 6.9 - 7.2 7.9 6.2 - 4.2 6.4 7.7 7.6
11 10.8 6.6 7.0 - 9.1 6.6 6.9 8.6 4.3 6.8 - 7.7
12 6.5 8.2 7.0 - 6.9 7.0 8.0 6.4 4.7 6.9 7.7 9.5
13 5.5 9.7 5.1 - 7.5 6.0 8.7 8.1 4.2 6.2 7.3 8.4
14 3.7 8.8 7.8 - 5.7 5.9 7.6 10.2 3.8 6.2 7.0 9.1
15 8.3 7.3 16.0 - 6.0 6.2 7.1 6.5 4.4 6.2 7.8 9.4
16 - 480.0 65.2 - 5.8 6.4 5.6 13.6 65.2 7.4 32.4 10.0
17 - 356.0 37.8 - 7.5 6.2 6.2 6.9 9.5 8.2 7.9 6.3
18 9.1 100.3 9.9 - 7.3 5.8 8.0 6.7 5.6 7.7 12.3 9.5
19 14.5 9.7 6.5 - 6.9 6.3 4.8 7.9 6.0 10.7 10.3 -
20 17.0 5.9 7.2 - 5.7 6.0 4.5 270.3 4.8 31.1 17.3 -
21 13.0 6.9 5.5 - 5.2 6.2 4.1 48.3 6.3 112.9 10.2 6.0
22 12.7 6.8 5.1 - 5.9 6.0 4.0 18.5 5.4 20.1 7.0 7.3
23 12.3 5.5 4.7 106.0 5.7 10.3 5.6 13.0 5.5 18.2 20.3 7.8
24 12.0 17.9 7.3 37.6 5.9 13.3 4.7 6.5 5.8 9.7 10.6 28.0
25 20.6 2041.7 13.7 109.7 6.1 6.2 4.5 7.7 5.2 8.1 8.0 11.8
26 7.8 804.6 17.5 9.0 6.3 5.6 5.5 7.7 4.8 8.7 11.3 6.6
27 9.2 920.9 8.5 - 5.9 5.8 5.1 11.3 - 11.9 10.1 6.7
28 9.0 63.0 109.8 7.0 5.5 5.4 5.6 5.8 9.2 62.2 - 6.3
29 1198.4 6.6 5.5 4.0 5.6 6.2 5.6 5.3 6.9 28.6 - 11.8
30 15.3 6.9 73.0 5.1 4.9 5.8 6.6 42.9 33.2 9.7 6.6
31 1586.4 63.8 5.5 6.4 6.1 18.2 6.8
Av: 109.0 206.0 15.8 31.8 7.8 7.9 6.5 19.7 16.8 16.5 27.3 8.6
| 1992 yearly mean = 39.2 s.f.u. (mean of 339 daily means) |
|