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From: oler@rho.uleth.ca (Cary Oler)
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Subject: Daily Summary of Ionospheric Data for 28 July
To: solar-daily@lut.fi
Date: Sun, 1 Aug 93 11:48:20 MDT
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Reply-To: SOLAR-DAILY Distribution List <solar-daily@lut.fi>
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Status: OR

                    ---------------------------------------
                    DAILY IONOSPHERIC SUMMARY FOR 28 JUL 93
                    ---------------------------------------


REPORTS OF IONOSPHERIC ABSORPTION
---------------------------------

DIX: Type of Measurement = Riometer.
     Type of Phenomenon  = Auroral Absorption.
     Start of Event: 0815Z
     Event Maximum : 0900Z,  Maximum Absorption: 1 dB
     End of Event  : 1200Z


M-FACTORS FOR 3000 KM DISTANCES - M(3000)F2
-------------------------------------------

     JUL  MUR  ASH  SAL  TOM  DIX  MAG  BOU  VBG  GOO  EIE  TAO  RAM  ARG  BER  NIC  TOW
     ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---
00Z: 3.0            3.0       2.8  3.2  3.3  3.1  3.0       3.3  3.3   B    B   2.9
01Z: 2.8  3.0  3.0  2.9  3.1       3.2       3.1  3.4  2.9  3.1  3.0   B    B   3.5
02Z: 2.9  2.8       2.8  3.0       2.9       3.1  2.7       2.8  3.0   B    B   3.0  3.0
03Z: 2.9  2.8  3.3  2.8  3.0  2.8            3.0  2.5       2.8  2.8   B   3.0  3.2  3.4
04Z: 2.9  2.8  3.3  2.8  2.9  2.6            3.3  2.9       2.8  2.7  2.7   B   3.1  3.4
05Z: 2.8       2.6  3.0  2.8       3.0       3.1  3.1       2.8  2.9   B    B   3.0  3.0
06Z: 2.9       3.0       3.0       3.1       3.0  2.7       2.9  2.9  3.2   B   3.3  3.3
07Z: 2.8            2.8  2.9                 2.8  2.8       2.8  2.7   B    B   2.9
08Z: 2.9            2.7            3.1       2.9  3.0       3.1  3.0   B    B    C   3.4
09Z:                2.9            3.2       3.0  3.2       3.2  3.0  3.5   B    C   3.3
10Z:      2.8  2.7  3.1       2.9            3.1  3.3       3.1  3.0   B    A   2.8  2.6
11Z:      3.0  3.0  3.1       2.9  3.2       3.3  3.4       3.3  3.4  3.2   B   2.9
12Z:           2.9  3.1       2.9  3.1       3.3  3.5       3.2  3.2  3.4  3.6  3.1  3.3
13Z:                3.1       2.8  3.0       3.1  3.2       3.1  3.2   A   3.4  3.1
14Z:      3.0  3.0  3.1       3.3  3.0       3.2  3.3       2.8  3.2  3.5   A    C   2.8
15Z:      3.1  3.0  3.2       2.9  3.0       3.3  2.9  2.7   R   3.2   B    A    A
16Z:      3.1  2.8  3.2       3.1            3.1  3.1  2.7  3.4  3.4   B   3.1
17Z:      3.1  2.8  3.0       3.3  3.0            2.9  2.9  3.5  2.8   A   2.7       3.6
18Z:      3.1  2.9  3.0            3.0            3.0  2.6  3.2  2.8   B   2.8       3.3
19Z:           2.8  2.9            3.2            3.0  2.7  3.0  2.9   B   3.1       3.0
20Z:      3.0  2.8  3.1            3.0                      3.1                      2.9
21Z:           2.5  3.0            3.1                      3.3                      3.5
22Z:           2.6  3.0            3.3                 3.0  3.3             A        3.7
23Z:           2.9                 3.0            3.0  2.9  3.3  3.0   B    B
=========================================
Estimated Average Global M(3000)F2:  3.03.


MINIMUM OBSERVED FREQUENCIES - FMIN (MHz)
-----------------------------------------

     MUR  ASH  SAL  TOM  DIX  MAG
     ---  ---  ---  ---  ---  ---
00Z:           1.0       1.0  1.0
01Z: 1.0  2.0  1.0  1.0  1.0  1.0
02Z: 1.0  2.0  1.0  1.0  1.6  1.0
03Z: 1.0  1.8  1.0  1.0  1.6  1.0
04Z: 1.0  1.5  1.0  1.2  1.6  1.0
05Z: 1.0  1.8  1.0  1.0  1.4  1.0
06Z: 1.0  2.0  1.0  1.0  1.0  1.0
07Z: 1.0  2.1  1.0  1.0  1.0  1.0
08Z: 1.0  2.2  1.0       1.5  1.0
09Z:           1.0            1.0
10Z: 1.0  2.2  1.0       3.8  1.2
11Z: 1.0  2.2  1.0       1.5  1.0
12Z: 1.0  2.0  1.0       1.0  1.0
13Z: 1.2  2.0  1.0       1.2  1.0
14Z: 1.0  2.0  1.0       1.0  1.0
15Z: 1.0  3.1  1.0       1.2  1.0
16Z: 1.0  2.0  1.0       1.0  1.0
17Z: 1.0  2.0  1.0       1.4  1.0
18Z: 1.0  1.8  1.0       1.4  1.0
19Z:      1.8  1.0       1.4  1.0
20Z: 1.0  1.9  1.0       1.0  1.0
21Z: 2.0  1.8  1.0       2.0  1.0
22Z: 1.7  2.0  1.0       1.2  1.0
23Z: 1.5                 1.0  1.0


CRITICAL SPORADIC E-LAYER FREQUENCIES - Es (MHz)
------------------------------------------------

     MUR  ASH  SAL  TOM  DIX  MAG
     ---  ---  ---  ---  ---  ---
00Z:           2.8       3.8  3.7
01Z: 5.0  3.5       3.2  4.0  4.0
02Z:      6.2  4.8  4.0  3.0  5.4
03Z:      4.7  5.0  3.4  3.3  8.4
04Z:      3.7  3.2  4.0  3.2  8.4
05Z:      8.1  5.0  4.0  3.9  4.6
06Z:      5.9  5.2  3.4  4.6  6.4
07Z:       12  5.0  3.7       7.0
08Z:      6.0  3.5       3.2  5.5
09Z:      7.6  4.6            5.9
10Z:      9.2  3.6            8.3
11Z:      5.4  3.0       3.8  4.3
12Z:      4.4                 4.3
13Z:      5.6                 3.9
14Z: 4.0  6.2  3.0            3.6
15Z: 4.0       3.0       3.2  2.8
16Z: 4.3  4.0  2.0       5.0
17Z: 3.1  6.2  4.3       4.0
18Z: 3.0  8.5  3.0       4.4
19Z:      8.0  3.0       4.0  2.2
20Z:      6.3  3.4       2.0  3.2
21Z: 4.0  3.8  3.5       4.4  3.4
22Z: 4.2       5.0       4.6  3.8
23Z: 4.8                 5.2  3.3


OBSERVED CRITICAL F2 LAYER FREQUENCIES (MHz)
--------------------------------------------

      JUL  WAR  POI  MUR  ASH  SAL  TOM  DIX  MAG  BOU  OTI  CAM  VBG  GOO  EIE  TAO  RES  RAM  ARG  BER  NIC  TOW  MNZ  BEI  CHQ  UPS  MAU
     ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
00Z:  5.4  4.7  5.7            4.3       4.8  5.6  5.8       6.5  6.0  5.8       6.2   F   5.8   B    B   6.8  7.7  6.2  6.8  7.6      10.2
01Z:  4.4  4.6  5.4  4.0  4.7  4.4  5.4  5.0  5.7            7.4  6.1  4.1  5.5  6.5   F   6.2   B    B   5.8            6.3  7.2      10.6
02Z:  4.0  4.1  5.0  4.5       4.8  5.6  5.0  5.7            7.2  5.8  4.2       6.9   F   5.6   B    B   4.3  6.4  5.5  6.2  6.3      11.8
03Z:  4.2   B   4.7  5.3  7.0  5.1  5.8  5.2                 7.1  6.8  3.8       8.0  4.9  5.8   B   5.1  3.8  7.4       5.9  8.0      12.4
04Z:  4.6   B   4.6  5.1  5.6  5.1  5.6  5.3                 7.1  7.3  3.7       9.2   F   5.7  4.7   B   5.4  7.3  5.4  6.7  9.1      12.4
05Z:  5.4  5.4  4.9  5.4  6.5  5.5  5.7  5.3  5.7            7.8  6.6  3.3      10.0   F   5.4   B    B   6.8  6.6  6.0  7.0  9.8      12.7
06Z:  5.7  5.9  5.8  5.3  8.1       6.1  5.2  5.5            7.3  6.1  3.7      10.0       4.9  3.4   B   7.8  7.1  6.8  7.4  9.6  5.6 11.6
07Z:  5.6  5.7  5.9  5.6  9.2  5.5  6.1  5.2                 6.3  5.5  2.9      11.0       4.6   B    B   6.3       6.5  7.9  8.8  5.7 11.6
08Z:  5.7  5.7  6.1  5.6       5.5       5.3  6.0            4.0  5.5  4.1      11.6       4.1   B    B    C   5.6  6.4  6.8  9.1  5.8 11.5
09Z:  6.0  6.1  6.1            5.8            6.0            4.7  5.4  4.6      11.6       3.8  4.6   B    C   3.6  6.2  7.0 10.5  6.0  9.4
10Z:  5.9  6.0  6.9  5.9  6.9  6.0       5.6                 4.7  6.4  5.4      11.6       4.0   B    A   8.2  3.3  6.0  6.7 10.6  5.8  8.8
11Z:  6.0  6.4  6.1  5.6  7.4  5.6       5.5  7.0            4.1  5.1  5.6      10.5       4.7  6.0   B   9.3  4.0  6.4  6.8 10.4  5.7  8.6
12Z:  6.0  5.9  6.2  5.3  7.9  5.5       5.3  6.3       4.9  4.0  5.1  5.0       7.1       5.9  6.0  6.2  8.2  3.9  6.0       9.3  5.8  8.9
13Z:  5.9  5.6  6.1  5.4       5.5       5.0  6.0       5.2  4.4  5.4  5.5       8.1   F   5.9   A   5.9  7.5       6.6       7.8  5.9  6.3
14Z:  5.7  5.5  5.8  5.5  7.0  5.2       5.0  5.3  4.9  5.7  4.4  6.9  5.6       9.0       5.8  5.5   A    C   3.2  6.5  5.9  7.0  5.4  5.8
15Z:  5.8  5.6  6.6  5.4  6.9  5.4       5.2  5.0  4.9  5.7  4.7  6.6  5.8  4.7   R        5.6   B    A    A   3.1  5.9       7.5  5.4  5.8
16Z:  5.5  5.6  6.2  5.2  7.2  5.2       4.6       5.2  5.9  4.5  6.5  6.1  5.3  7.1       5.5   B   6.2       3.2  5.4  6.0  6.2  5.4  6.0
17Z:  5.6  5.3  5.8  5.2  6.7  5.2       4.6  3.8  5.4  5.8  4.9       5.8  5.2  6.8       6.0   A   6.1       3.8  5.3  4.9  3.3  5.4  6.5
18Z:  5.8  6.1  6.1  5.0  6.3  5.1            4.2   A   5.6  5.6       6.0  5.4  4.2       5.9   B   6.3       3.3  4.9       3.1  5.6  6.9
19Z:  6.1   R   6.3       5.1  4.6            4.9   A   5.7  4.7       5.8  5.7  3.7       6.1   B   6.2       3.0  4.3  4.2  3.4       7.3
20Z:  6.7  6.8  7.2  5.0  5.0  4.2            4.9   R   5.7  3.9                 3.8                           3.2  3.8  4.2  3.3  6.3  7.5
21Z:  6.2  5.7  6.8       4.9  4.0            5.2  5.7       4.6                 3.9                           4.8  4.4  4.8  3.2  6.0  8.2
22Z:  5.5  5.2  6.3       4.9  4.1            5.9  5.5       5.9            5.5  5.5                  A        6.0  4.8  5.8  3.9  5.1  9.1
23Z:   C   5.0  6.1       6.4                 5.2  5.2       6.1       7.0  5.1  6.0       6.2   B    B                  6.2  5.5      10.0
=========================================
Estimated Average Global foF2:  5.96 MHz.


MAXIMUM USABLE FREQUENCIES FOR 3000 KM PATHS (MHz) - MUF(3000)
--------------------------------------------------------------

      JUL  MUR  ASH  SAL  TOM  DIX  MAG  BOU  VBG  GOO  EIE  TAO  RAM  ARG  BER  NIC  TOW
     ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
00Z: 16.2           12.9      13.4 17.9 19.3 18.6 17.4      20.5 19.1   B    B  19.7
01Z: 12.3 12.0 14.1 12.8 16.7      18.2      18.9 13.9 16.0 20.1 18.6   B    B  20.3
02Z: 11.6 12.6      13.4 16.8      16.5      18.0 11.3      19.3 16.8   B    B  12.9 19.2
03Z: 12.2 14.8 23.1 14.3 17.4 14.6           20.4  9.5      22.4 16.2   B  15.3 12.2 25.2
04Z: 13.3 14.3 18.5 14.3 16.2 13.8           24.1 10.7      25.8 15.4 12.7   B  16.7 24.8
05Z: 15.1      16.9 16.5 16.0      17.1      20.5 10.2      28.0 15.7   B    B  20.4 19.8
06Z: 16.5      24.3      18.3      17.0      18.3 10.0      29.0 14.2 10.9   B  25.7 23.4
07Z: 15.7           15.4 17.7                15.4  8.1      30.8 12.4   B    B  18.3
08Z: 16.5           14.9           18.6      16.0 12.3      36.0 12.3   B    B    C  19.0
09Z:                16.8           19.2      16.2 14.7      37.1 11.4 16.1   B    C  11.9
10Z:      16.5 18.6 18.6      16.2           19.8 17.8      36.0 12.0   B    A  23.0  8.6
11Z:      16.8 22.2 17.4      16.0 22.4      16.8 19.0      34.6 16.0 19.2   B  27.0
12Z:           22.9 17.0      15.4 19.5      16.8 17.5      22.7 18.9 20.4 22.3 25.4 12.9
13Z:                17.0      14.0 18.0      16.7 17.6      25.1 18.9   A  20.1 23.2
14Z:      16.5 21.0 16.1      16.5 15.9      22.1 18.5      25.2 18.6 19.2   A    C   9.0
15Z:      16.7 20.7 17.3      15.1 15.0      21.8 16.8 12.7   R  17.9   B    A    A
16Z:      16.1 20.2 16.6      14.3           20.1 18.9 14.3 24.1 18.7   B  19.2
17Z:      16.1 18.8 15.6      15.2 11.4           16.8 15.1 23.8 16.8   A  16.5      13.7
18Z:      15.5 18.3 15.3           12.6   A       18.0 14.0 13.4 16.5   B  17.6      10.9
19Z:           14.3 13.3           15.7   A       17.4 15.4 11.1 17.7   B  19.2       9.0
20Z:      15.0 14.0 13.0           14.7   R                 11.8                      9.3
21Z:           12.2 12.0           16.1                     12.9                     16.8
22Z:           12.7 12.3           19.5                16.5 18.1             A       22.2
23Z:   C       18.6                15.6           21.0 14.8 19.8 18.6   B    B
===============================================
Estimated Average Global MUF(3000)F2: 18.05 MHz.


OBSERVED TOTAL IONOSPHERIC ELECTRON CONTENT
-------------------------------------------

      BOU  TAO  PAL  SHE  OSA  CNV  ANC
     ---- ---- ---- ---- ---- ---- ----
00Z:  200  130  380            170  220
01Z:  200  150  410            170  210
02Z:  200  200  470            160  220
03Z:  210  270  510            130  220
04Z:  200  330                 130  230
05Z:  190  390                 140  230
06Z:  170  460                 120  230
07Z:  140  480                  90  220
08Z:  130  500                  75  230
09Z:  140  520                  68  230
10Z:  130  470                  69  220
11Z:  120  390                  67
12Z:  120  340                  83
13Z:  160  300                 120
14Z:  180  180                 130
15Z:  190  150                 150
16Z:  190  230                 170
17Z:  180  200                 190  240
18Z:  180       160            200  240
19Z:  190  130  200            210  270
20Z:  200                           270
21Z:  200
22Z:  190
23Z:  190  220  340            210  260


LIST OF REPORTING STATIONS AND THE SATELLITES THEY USE TO MEASURE TEC:

JUL = Juliusruh/Rugen            Germany             (N54E013)
WAR = Warsaw                     Poland              (N52W021)
POI = Poitiers                   France              (N46E000)
MUR = Murmansk                   USSR                (N68E033)
ASH = Ashkhabad                  USSR                (N37E058)
SAL = Salekhard                  USSR                (N66E066)
TOM = Tomsk                      USSR                (N56E085)
DIX = Dixon                      USSR                (N74E081)
MAG = Magadan                    USSR                (N60E151)
BOU = Boulder CO                 USA                 (N40W105)
OTI = Ottawa                     Canada              (N45W076)
CAM = Camden                     Australia           (S34E151)
VBG = Vandenberg AFB CA          USA                 (N34W120)
GOO = Goose Bay                  Canada              (N53W060)
EIE = Eielson AFB AK             USA                 (N64W147)
TAO = Taoyuan                    Taiwan              (N25E121)
RES = Resolute Bay               Canada              (N74W094)
RAM = Ramey AFB                  Puerto Rico         (N18W067)
ARG = Argentia                   Canada              (N48W053)
BER = Bermuda                    Bermuda             (N32W064)
NIC = Nicosia                    Cyprus              (N35E033)
TOW = Townsville                 Australia           (S19E147)
PAL = Palehua HI                 USA                 (N21W158)
SHE = Shemya AK                  USA                 (N52E174)
OSA = Osan AB                    Korea               (N37E127)
CNV = Cape Canaveral FL          USA                 (N28W080)
ANC = Anchorage AK               USA                 (N61W150)
MNZ = Manzhouli                  China               (N49E117)
BEI = Beijing                    China               (N40E116)
CHQ = Chongqing                  China               (N29E106)
UPS = Uppsala                    Sweden              (N60E018)
MAU = Maui HI                    USA                 (N20W157)


DESCRIPTIVE CODES WHICH MAY APPEAR IN THE FOF2, M(3000), OR SID SECTIONS:

            A = Blanketing Sporadic E
            B = Complete Absorption
            C = Equipment Problems
            D = Frequency Higher than Equipment
            E = Frequency Lower than Equipment
            F = Spread Echoes
            G = FOF2 is less than FOF1
            I = Smoothed Value
            R = Attenuation


     Values in this experimental daily report have not been checked
     for errors and may occasionally contain a few.  Total electron
     content values are given in units of 10^15 electrons per square meter.


