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From: oler@rho.uleth.ca (Cary Oler)
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Subject: Daily Summary of Ionospheric Data for 26 July
To: solar-daily@lut.fi
Date: Sat, 31 Jul 93 21:13:58 MDT
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Status: OR

                    ---------------------------------------
                    DAILY IONOSPHERIC SUMMARY FOR 26 JUL 93
                    ---------------------------------------


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

     BOU  MUR  ASH  SAL  TOM  DIX  MAG  VBG  GOO  TAO  KEA  RAM  ARG  BER  NIC  DYS  TOW  JUL  UPS
     ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---
00Z: 3.5  3.0  2.8  2.9  3.2            3.3  3.0  3.3  2.7  3.4   B    B    C   3.4  3.5  2.7
01Z: 3.3       2.9  3.1  3.0       3.0  3.1  3.3  2.9  2.7  3.5   B    B   2.8  3.3  3.3  2.9  2.8
02Z: 3.4       2.8  3.0  3.1       3.1  3.3  2.9   A   2.8  3.5   A    B   3.0  3.1  3.1  2.7  2.8
03Z: 3.3            3.0  2.9       3.2  3.0  2.8  2.8  2.9  2.9   A    A   3.2  2.7  3.5  2.9
04Z: 3.0            2.9  3.1            3.0  2.9  2.9  3.2  2.7   A   3.2  3.3  2.9  3.3  2.8  2.8
05Z: 3.0       3.0  2.9  3.0       3.0  3.0  2.5  2.6  3.1  2.9   A    B   3.5  2.8       2.9  3.0
06Z: 3.0  2.9       3.0  2.9       3.0  3.1  3.0  2.9  3.1  2.8   A    B   3.2  3.0       2.8
07Z: 3.0  3.1  3.0                      2.8  2.8  3.0  3.0  2.9   A    B   2.8  3.0       3.2
08Z: 3.0  3.1       3.1                 3.3  3.0  3.1  2.9  2.9  3.0   B   3.2  3.1  3.4  3.0
09Z: 3.3  3.0                 2.9  3.0  3.0  3.2  3.0  3.0  3.0  3.3   B    C   3.3  3.4
10Z: 3.5            3.0  3.2       3.2  2.7  3.3  3.0  3.1  3.3   A   3.8  3.0  3.2
11Z: 3.4                           3.0  2.7  3.2  3.2  3.2  3.5  3.5   A   3.0  3.1  2.7
12Z: 3.2  3.0  2.9  3.0  3.0  3.1  3.0  2.9  3.2   R   3.5  3.4   A   3.6  3.0  3.1
13Z: 3.4  3.1       3.1  3.1  3.2  3.0  3.3  3.1   R   3.4  3.0  3.2  2.9  3.0  2.9
14Z:      3.1       3.1  3.1  3.1  3.0  3.2  3.3   R   2.9  3.0   A   3.0  3.0  3.3  2.7
15Z:      3.1       3.1  3.2  3.1  3.0  3.4  3.6  2.8  3.0  3.1   B   3.2  2.9  3.2  3.2
16Z:      3.1  2.9  3.1  3.0       3.0  3.3  3.1   R   3.3  3.0   A   3.1  3.1  3.3  3.2
17Z:      3.3  3.1  3.2            3.0  2.7  3.0  3.2  3.5  2.8   B   3.0  3.1  2.8
18Z:      3.1  2.7  3.1  3.1       3.1  2.9  3.1  3.2       2.9   A   3.2  3.2  2.7
19Z:      3.1  2.8  3.1  3.0  2.9  3.2  2.9  3.1  3.1       3.2  3.3  3.3       3.0
20Z:      3.1  3.0  3.0  3.0  3.1  3.0  2.9  3.1   R        2.9  3.2  3.1       2.8
21Z:      3.1       2.8  3.0            3.0  3.0  3.0       2.8  2.7  3.1  3.2  2.8
22Z:           2.9  2.9  3.0       3.2  3.0  3.0  3.2       2.9  3.0  2.9  2.9  2.9
23Z:      3.1       3.1  3.2  2.9  3.0  3.1  3.0  3.5       3.1  3.1   B   2.6  3.2
=========================================
Estimated Average Global M(3000)F2:  3.06.


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

     MUR  ASH  SAL  TOM  DIX  MAG
     ---  ---  ---  ---  ---  ---
00Z: 1.0  1.5  1.0  1.0  1.0  1.0
01Z:      2.0  1.0  1.0       1.0
02Z:      2.6  1.0  1.0       1.0
03Z:           1.0  1.0  1.0  1.0
04Z:           1.0  1.3  1.2  1.0
05Z:      2.0  1.0  1.5  1.2  1.0
06Z: 2.8  3.7  1.0  1.8       1.0
07Z: 2.0  2.0
08Z: 1.8  2.0  1.0       4.8
09Z: 1.0  2.0  1.0       2.2  1.0
10Z:      2.0  1.0  1.6  3.1  1.0
11Z:                          1.0
12Z: 1.0  1.9  1.0  1.3  1.0  1.0
13Z: 1.0       1.0  1.0  1.2  1.0
14Z: 1.0       1.0  1.1  1.5  1.0
15Z: 1.0       1.0  1.0  1.3  1.0
16Z: 1.0  1.6  1.0  1.0  2.8  1.0
17Z: 1.0  1.9  1.0       1.0  1.0
18Z: 1.0  1.7  1.0  1.1  1.0  1.0
19Z: 1.0  1.8  1.0  1.0  1.0  1.0
20Z: 1.0  1.8  1.0  1.0  1.0  1.0
21Z: 1.0       1.0  1.0  1.0
22Z: 1.0  1.7  1.0  1.0  1.4  1.0
23Z: 1.0       1.0  1.0  1.0  1.0


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

     MUR  ASH  SAL  TOM  DIX  MAG
     ---  ---  ---  ---  ---  ---
00Z: 5.0       4.0  2.7  6.0  3.9
01Z:      2.4  3.0  3.6       4.3
02Z:           3.1  5.3       4.0
03Z:           3.0  7.0  3.8  4.1
04Z:           3.1  5.0  3.2  3.1
05Z:      4.9       4.2  3.2  3.4
06Z: 3.3  6.8  4.3  3.8       3.1
07Z: 4.1  6.5
08Z: 4.3   10  5.0
09Z: 4.8  7.7  7.8            3.0
10Z:      5.5  5.0            2.6
11Z:                          2.7
12Z: 5.0  4.0  5.5  3.0       3.6
13Z: 3.8       5.0  5.0       3.8
14Z:           2.6  3.5  3.1  2.7
15Z:           2.5  2.8  3.3  1.7
16Z:      4.7  2.1  4.0  4.0  1.2
17Z: 3.0  3.6  2.6            1.8
18Z: 5.2  4.7  3.5       6.0  1.4
19Z:      5.2  5.0  3.1  4.4  2.3
20Z:      3.0  3.2  2.5  4.2  3.2
21Z:           3.4  3.0  5.8
22Z: 7.0  3.2  2.6  2.4  2.4  4.4
23Z: 5.0       3.1  2.0  4.0  5.4


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

      BOU  OTI  MUR  ASH  SAL  TOM  DIX  MAG  VBG  GOO  TAO  KEA  RAM  ARG  BER  NIC  DYS  TOW  MNZ  BEI  CHQ  JUL  WAR  UPS  POI  MAU
     ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
00Z:  6.1       5.3  4.4  4.9  5.7       5.1  7.3  6.4  7.3  7.8  7.0   B    B    C   7.2  7.1  6.2  7.2  7.1  5.0  4.4  4.4  6.1
01Z:  6.2            4.1  5.1  5.9       5.3  7.2  5.6  6.5  8.3  4.5   B    B   5.9  7.1  7.0  6.6  7.0  7.0  4.7  4.2  4.2  5.4
02Z:  6.3            5.4  5.5  6.1       5.7  6.5  5.4   A   8.7  4.6   A    B   5.9  6.0  6.7  6.0  6.6  6.8  4.2  3.9  4.1  5.2
03Z:  6.3                 5.8  6.3  5.5  5.1  5.8  4.5  8.3  9.9  4.8   A    A   5.3  5.2  7.3  5.4  6.0  7.4  3.8  4.1       5.1
04Z:  5.4                 5.8  6.9  5.5  5.1  6.7  3.9  8.8 10.6  4.6   A   5.4  6.2  4.9  7.1  6.0       8.0  5.1  4.9  4.9  4.8
05Z:  4.7            7.2  6.0  6.3  5.5  5.3  6.4  3.8  9.2  9.4  4.5   A    B   6.0  4.7  6.3  6.3  7.0  8.3  5.4  5.4  5.3  5.1
06Z:  4.6       6.3  7.2  6.0  6.3       5.4  6.1  3.8 10.6  8.8  4.1   A    B   6.7  4.7            7.6  9.2  5.6  6.0       5.3
07Z:  4.5       6.4  7.4                      5.7  3.5 10.6  8.1  4.0   A    B   6.6  4.8            7.7  9.5  6.0  5.7  6.6  5.4
08Z:  4.4       6.5       6.1       5.5       5.2  3.8  9.4  7.5  3.8  4.2   B   6.8  4.6  6.9       6.9 10.0  6.4  6.4  6.4  6.1
09Z:  4.4       6.4                 5.8  5.7  5.9  4.6  8.6  7.5  3.5  4.6   B    C   4.5  5.2       6.7  9.5  6.0  6.5  6.7  5.9
10Z:  4.0                 6.1  6.2  5.5  5.8  4.6  4.7  8.7  7.4  4.5   A   4.1  7.9  3.4  3.1       6.3  9.0  6.3  6.0  6.3  6.9
11Z:  3.1                                6.4  5.4  5.5  8.5  7.4  4.7  6.0   A   8.0  3.1  3.3       6.3  9.2  6.2  6.5  6.4  6.8
12Z:  3.7       6.1  7.7  6.4  6.3  5.6  6.4  3.9  5.8   R   7.1  5.1   A   4.8  7.8  4.5            6.8  8.3  6.4  6.3  6.1  6.7
13Z:  4.4       6.1       6.2  6.5  5.6  6.5  4.5  5.6   R   5.3  5.3  6.0  5.7  7.9  5.6            6.9  8.3  6.6  6.5  6.5  6.8
14Z:  4.9       5.5       6.1  6.6  5.3  5.8  5.7  6.1   R   4.1  6.1   A   6.0  7.7  6.1  3.8       6.8  3.7  6.4  6.5  6.1  6.5
15Z:  5.9       5.8       5.8  6.7  5.2  5.6  7.1  5.3  7.0  3.8  6.4   B   5.4  7.4  6.5  3.9       6.8  7.9  6.0  6.0  6.1  6.6
16Z:  6.1       5.9  7.6  5.9  6.5       5.2  6.5  5.9   R   4.8  6.6   A   6.9  7.6  5.7  3.9       6.4  7.3  6.0  6.1  6.1  7.1
17Z:  5.9       5.7  7.0  5.8            4.7  6.2  5.6  6.5  6.7  6.2   B   6.2  7.4  5.8            5.7  7.0  6.0  6.1  5.8  6.4
18Z:   A        5.5  7.0  5.6  5.5       4.6  6.1  5.9  5.5       6.0   A   6.4  7.4  5.9            5.1  5.8  6.2  6.4  6.8  6.1  5.6
19Z:   C   5.9  5.2  6.0  5.3  5.0  5.2  5.1  6.9  5.9  4.7       6.0  6.1  6.1       5.6            4.7  5.3  5.8  6.2  5.8  6.3  6.0
20Z:   C   5.6  5.2  6.0  5.2  4.1  5.8  5.5  6.5  5.8   R        5.7  5.9  6.0       6.0                 5.3  6.4  6.4  6.2  6.5  6.7
21Z:   C   5.6  5.2       5.0  3.9  5.0       7.1  5.8  3.9       5.7  6.0  5.9  6.2  6.2            4.6  4.7  6.7  6.4       6.6  7.7
22Z:  5.9            5.5  4.9  3.8  5.0  5.4  7.3  6.2  6.0       5.8  6.2  5.8  5.4  6.2            5.2  4.4  6.6  6.3  6.7  5.8  8.4
23Z:  5.7       5.0       4.7  4.6  6.0  5.2  6.8  6.4  7.5       6.2  7.0   B   6.4  6.3            5.9  6.2  6.2  5.6  5.9  5.2  8.8
=========================================
Estimated Average Global foF2:  6.00 MHz.


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

      BOU  MUR  ASH  SAL  TOM  DIX  MAG  VBG  GOO  TAO  KEA  RAM  ARG  BER  NIC  DYS  TOW  JUL  UPS
     ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
00Z: 21.0 15.9 12.3 14.2 18.2           24.1 19.2 24.1 21.1 23.8   B    B    C  24.5 24.9 13.5
01Z: 20.5      11.9 15.8 17.7      15.9 22.3 18.5 18.9 22.4 15.8   B    B  16.5 23.4 23.1 13.6 12.0
02Z: 21.5      15.1 16.5 18.9      17.7 21.4 15.7   A  24.4 16.1   A    B  17.7 18.6 20.8 11.3 11.5
03Z: 21.0           17.4 18.3      16.3 17.4 12.6 23.2 28.7 13.9   A    A  17.0 14.0 25.6 11.0
04Z: 16.5           16.8 21.4           20.1 11.3 25.5 33.9 12.4   A  17.3 20.5 14.2 23.4 14.3 13.5
05Z: 14.0      21.6 17.4 18.9      15.9 19.2  9.5 23.9 29.1 13.1   A    B  21.0 13.2      15.7 16.2
06Z: 13.7 18.3      18.0 18.3      16.2 18.9 11.4 30.7 27.3 11.5   A    B  21.4 14.1      15.7
07Z: 13.7 19.8 22.2                     16.0  9.8 31.8 24.3 11.6   A    B  18.5 14.4      19.2
08Z: 13.3 20.1      18.9                17.2 11.4 29.1 21.8 11.0 12.6   B  21.8 14.3 23.5 19.2
09Z: 14.6 19.2                16.8 17.1 17.7 14.7 25.8 22.5 10.5 15.2   B    C  14.8 17.7
10Z: 14.0           18.3 19.8      18.6 12.4 15.5 26.1 22.9 14.8   A  15.6 23.7 10.9
11Z: 10.5                          19.2 14.6 17.6 27.2 23.7 16.4 21.0   A  24.0  9.6  8.9
12Z: 11.7 18.3 22.3 19.2 18.9 17.4 19.2 11.3 18.6   R  24.9 17.3   A  17.3 23.4 13.9
13Z: 14.9 18.9      19.2 20.1 17.9 19.5 14.8 17.4   R  18.0 15.9 19.2 16.5 23.7 16.2
14Z:      17.0      18.9 20.5 16.4 17.4 18.2 20.1   R  11.9 18.3   A  18.0 23.1 20.1 10.3
15Z:      18.0      18.0 21.4 16.1 16.8 24.1 19.1 19.6 11.4 19.8   B  17.3 21.5 20.8 12.5
16Z:      18.3 22.0 18.3 19.5      15.6 21.4 18.3   R  15.8 19.8   A  21.4 23.6 18.8 12.5
17Z:      18.8 21.7 18.6           14.1 16.7 16.8 20.8 23.4 17.4   B  18.6 22.9 16.2
18Z:   A  17.0 18.9 17.4 17.0      14.3 17.7 18.3 17.6      17.4   A  20.5 23.7 15.9
19Z:   C  16.1 16.8 16.4 15.0 15.1 16.3 20.0 18.3 14.6      19.2 20.1 20.1      16.8
20Z:   C  16.1 18.0 15.6 12.3 18.0 16.5 18.9 18.0   R       16.5 18.9 18.6      16.8
21Z:   C  16.1      14.0 11.7           21.3 17.4 11.7      16.0 16.2 18.3 19.8 17.4
22Z:           16.0 14.2 11.4      17.3 21.9 18.6 19.2      16.8 18.6 16.8 15.7 18.0
23Z:      15.5      14.6 14.7 17.4 15.6 21.1 19.2 26.2      19.2 21.7   B  16.6 20.2
===============================================
Estimated Average Global MUF(3000)F2: 18.36 MHz.


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

      BOU  TAO  ANC  CNV  PAL  SHE  OSA
     ---- ---- ---- ---- ---- ---- ----
00Z:  200  140  190  220  260
01Z:  200  170  200  170
02Z:  200  210  210  120  300
03Z:  190  270  200  100  330
04Z:  160  300  200   96  360
05Z:       340  200   82  310
06Z:  140  420  210   80  270
07Z:  140  460  210   75  230
08Z:  130  390  200   76  190
09Z:  130  340  190   67  180
10Z:  120  280  180   36  160
11Z:  100  220  170   37  160
12Z:  100  190  160   78  120
13Z:  150  140  150  120   76
14Z:  190  100  150  150   61
15Z:  220   75  170       110
16Z:  230   83  210  180   73
17Z:  220   85  240  190  120
18Z:  210   85  250  190
19Z:  210       250  180
20Z:  210       240  170
21Z:  210  120  240  170  240
22Z:  200       230  170  270
23Z:  200       220  180  320


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

BOU = Boulder CO                 USA                 (N40W105)
OTI = Ottawa                     Canada              (N45W076)
MUR = Murmansk                   USSR                (N68E033)
ASH = Ashkhabad                  USSR                (N37E058)
SAL = Salekhard                  USSR                (N66E066)
TOM = Tomsk                      USSR                (N56E085)
DIX = Dixon                      USSR                (N74E081)
MAG = Magadan                    USSR                (N60E151)
VBG = Vandenberg AFB CA          USA                 (N34W120)
GOO = Goose Bay                  Canada              (N53W060)
TAO = Taoyuan                    Taiwan              (N25E121)
KEA = Keakawapu HI               USA                 (N20W156)
RAM = Ramey AFB                  Puerto Rico         (N18W067)
ARG = Argentia                   Canada              (N48W053)
BER = Bermuda                    Bermuda             (N32W064)
NIC = Nicosia                    Cyprus              (N35E033)
DYS = Dyess AFB TX               USA                 (N32W099)
TOW = Townsville                 Australia           (S19E147)
ANC = Anchorage AK               USA                 (N61W150)
CNV = Cape Canaveral FL          USA                 (N28W080)
PAL = Palehua HI                 USA                 (N21W158)
MNZ = Manzhouli                  China               (N49E117) (GOES-3)
BEI = Beijing                    China               (N40E116) (GOES-3)
CHQ = Chongqing                  China               (N29E106) (GOES-3)
JUL = Juliusruh/Rugen            Germany             (N54E013)
WAR = Warsaw                     Poland              (N52W021)
UPS = Uppsala                    Sweden              (N60E018)
POI = Poitiers                   France              (N46E000)
MAU = Maui HI                    USA                 (N20W157) (GOES-3)
SHE = Shemya AK                  USA                 (N52E174)
OSA = Osan AB                    Korea               (N37E127)


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.


