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From: oler@rho.uleth.ca (Cary Oler)
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Subject: Daily Summary of Ionospheric Data for 28 December
To: solar-daily@lut.fi
Date: Tue, 28 Dec 93 22:29:18 MST
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                    ---------------------------------------
                    DAILY IONOSPHERIC SUMMARY FOR 28 DEC 93
                    ---------------------------------------


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

     BOU  MUR  ASH  SVE  SAL  TOM  DIX  MAG  JUL  WLP  MAU  VBG  GOO  EIE  TAO  CHU  KEA  ARG  NIC  DYS  LEA
     ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---
00Z: 3.6  2.8                 3.1  2.9  3.6  3.0  3.2  3.2  3.6  2.7  3.1  3.4       3.2   B   3.2  3.4  2.8
01Z: 3.6  2.9       3.1       3.3       3.4  2.8  2.3  3.3  3.4  2.7  3.2  3.6       3.4   B   3.4  3.5  3.0
02Z: 3.4  2.9  2.8  3.1                 3.6  3.1  3.0  3.3  3.6  3.0  3.0  3.6       3.3   B   3.3   A   2.8
03Z: 3.7  3.2  3.1  3.0       3.5  2.9  3.7  3.0   A   3.5  3.1  3.1  3.1  3.3       3.6   B   3.5  3.3  2.9
04Z:  A   3.1  3.2  2.8  2.9  3.8  3.3  3.4  3.0  2.9  3.7  3.4  2.7  3.2  3.4       3.7   B   3.6  3.5  2.9
05Z:  A   2.8  3.4       3.4  3.8  3.1  3.6  3.3  3.0  3.3  3.0  2.3  2.4  3.3       3.4   B   3.7  3.1  2.9
06Z: 3.2  3.2  3.1       3.1       3.3  3.4  3.3  2.6  3.3  3.0  2.5  2.6  3.2       3.3   B   3.8  2.8  2.8
07Z: 3.2  3.3  3.2  3.2  3.3       3.3  3.4  3.1  2.6  3.3   A   2.8  2.4  3.1       3.3   B   3.8  3.0  2.9
08Z: 3.2  3.4  3.3       3.4       3.3  3.6  3.4  2.9  3.4   A   2.5  3.3  3.4       3.4   B   3.5  3.2  3.0
09Z: 3.2  3.5  3.2       3.3       3.3  3.0       3.1  3.5  3.1  2.2  2.9   R        3.5   A   3.6  3.1  3.1
10Z: 3.4  3.4  2.9       3.3       3.5  3.1       2.8  2.8  3.5  2.4  3.0  3.5       2.8   B   3.7  3.0  3.8
11Z: 3.2  3.5  3.3  3.2  3.5  3.3  3.2            2.9  3.2  3.9  3.1  2.7  3.4       3.3   B   3.1  2.9   A
12Z: 3.3  3.4  3.3       3.3  3.2                 2.4  3.2  4.0  3.4  2.4  3.5       3.2  3.8  3.4   A   3.8
13Z: 3.2       3.0  3.1  3.4  3.2                 3.5  3.2  2.7  3.6  2.2  3.6       3.2  3.5  3.8  3.4  3.6
14Z:           3.1       3.3  3.0       3.0       3.4  3.2  3.0  3.5  2.3  3.3   F   3.2  3.8  3.8  3.5  3.5
15Z:           3.1  3.0  3.3  3.0  3.2            3.2  3.0  3.6  3.6   A   2.9  3.0  3.0  3.5  3.3  3.6  3.4
16Z:           3.1  3.2       3.0                 3.4  3.2  3.4  3.8   A   2.8  3.4  3.2  3.3  3.5  3.5  3.7
17Z:           3.0            3.0                 3.3  3.0  3.6  3.5  2.6  2.9  3.4  3.0  3.6       3.2  3.1
18Z:           2.8                 3.4            3.3       3.3  3.4  2.3  3.4  3.5       3.6       3.4  2.9
19Z:                                              3.3       3.3  3.5  3.0  3.8   I        3.8       3.5  2.8
20Z:                                              3.4       3.5  3.4  3.3  3.3   R        3.6            3.1
21Z:                                              3.5       3.5  3.5  3.3  2.8   I         B        3.5  3.5
22Z:                                              3.4       3.7  2.8  3.5  2.9  3.4        B        3.6  3.6
23Z:                                              2.8       3.5  3.0  3.4  3.6             B        3.4  3.2
=========================================
Estimated Average Global M(3000)F2:  3.23.


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

     MUR  ASH  SVE  SAL  TOM  DIX  MAG
     ---  ---  ---  ---  ---  ---  ---
00Z: 1.0       1.8  1.0  1.0  1.0  1.1
01Z: 1.3       1.8  1.0  1.0  1.0  1.4
02Z: 1.2  2.0  1.8  1.0       1.0  2.4
03Z: 1.2  2.0  1.5  1.0  1.6  1.0  2.0
04Z: 1.0  2.0  1.4  1.0  2.0  1.0  1.6
05Z: 1.0  2.0  1.0  1.0  1.2  1.2  1.2
06Z: 1.3  2.0  1.0  1.5       1.2  1.0
07Z: 1.1  2.0  1.0  2.0       1.8  1.0
08Z: 1.2  2.0  1.0  1.0       1.5  1.0
09Z: 1.0  2.0  1.0  1.0       1.5  1.0
10Z: 1.0  2.0  1.0  1.5       1.0  1.0
11Z: 1.3  2.0  1.0  1.0  1.1  1.8
12Z: 1.3  2.0  1.0  1.0  1.0       1.0
13Z:      2.0  1.5  1.0  1.0  1.0  1.0
14Z:      2.0  1.6  1.0  1.0  1.2  1.0
15Z:      2.0  1.5  1.0  1.0  1.5  1.0
16Z:      2.0  1.5       1.4  1.8  1.0
17Z:      2.0  1.7       1.1  1.0  1.0
18Z:      2.0  1.5  1.0       1.5  1.0
19Z:
20Z:
21Z:
22Z:
23Z:


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

     MUR  ASH  SVE  SAL  DIX  MAG
     ---  ---  ---  ---  ---  ---
00Z: 3.7            4.6  2.8
01Z:                3.8  2.8
02Z:                3.5  2.6
03Z:                3.8       2.4
04Z:                          2.2
05Z:           2.0            2.2
06Z:           3.0            2.0
07Z:      3.7  2.8            2.0
08Z:      3.8  4.0            1.4
09Z:      3.9  3.3            1.2
10Z:      3.8  2.8       1.5  2.1
11Z:      3.9  2.4
12Z:           3.0            2.0
13Z:      2.3            2.4
14Z:      2.6            2.3  1.2
15Z:      2.2            2.9
16Z:      2.7            3.0  1.2
17Z:      2.9            5.2  1.4
18Z:      2.5       3.0  5.5  1.5
19Z:
20Z:
21Z:
22Z:
23Z:


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

      BOU  MUR  ASH  SVE  SAL  TOM  DIX  MAG  JUL  WAR  POI  WLP  MAU  VBG  GOO  EIE  TAO  CHU  KEA  ARG  NIC  DYS  LEA
     ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
00Z:  5.8  3.0       2.6       2.4  2.4  5.9  3.0  3.1  3.5  4.0 16.5  6.6  3.2  5.2  8.1      16.5   B   3.3  4.6  6.0
01Z:  4.3  2.9       3.0       2.2       6.8  3.0  3.1  3.3  3.6 16.7  4.4  2.8  4.9  9.5      16.7   B   3.2  3.5  7.0
02Z:  2.8  2.7  4.0  2.8                 7.4  3.0  2.9  3.5  3.4 12.6  2.8  2.6  3.7 10.0      12.6   B   3.0   A   8.3
03Z:  2.4  2.3  4.2  2.8       5.5  1.6  6.6  2.8  3.0  3.3   A   9.8  2.5  2.3  3.1  9.5       9.8   B   3.8  3.3  8.7
04Z:   A   2.0  6.5  3.5  1.9  6.7  2.0  6.5  2.8  3.4  3.3  3.8  8.5  2.7  2.0  2.2 10.6       8.5   B   3.8  3.3  8.9
05Z:   A   1.8  6.4  6.0  4.0  6.9  3.0  5.6  2.9  2.6  3.4  3.7  5.4  2.4  3.4  3.8 10.6       5.4   B   5.2  3.1  9.3
06Z:  2.6  1.9  7.0  6.3  5.0       4.0  4.5  2.8  3.1  2.7  3.8  5.5  2.8  4.2  3.9 10.1       5.5   B   6.5  4.0  9.4
07Z:  2.9  3.0  7.7  6.0  5.2       3.6  3.0  3.8  5.7  3.1  3.8  6.2   A   2.6  2.8  9.9       6.2   B   6.5  4.0  9.5
08Z:  3.0  4.3  6.9  7.8  6.4       4.0  2.0  6.0  6.6       4.4  4.5   A   2.3  3.0 12.0       4.5   B   7.7  3.9  9.8
09Z:  3.0  5.3  5.9  7.3  5.2       3.5  1.8                 4.9  3.6  3.3  2.8  2.3   R        3.6   A   7.7  4.0  9.3
10Z:  3.2  5.8  6.1  7.0  5.4       2.8  1.8                 4.5  3.4  3.2  2.9  2.9  9.0       3.4   B   7.3  4.1  6.8
11Z:  3.1  5.5  7.2  6.3  4.6  4.6  2.4                      3.7  3.5  3.0  2.6  2.4  7.1       3.5   B   7.0  3.9   A
12Z:  3.1  4.7  6.4  6.0  3.5  3.4                           5.0  3.4  5.4  4.4  3.3  5.6       3.4  5.7  7.5   A   4.4
13Z:  2.9       5.0  4.5  2.5  2.6                           7.5  3.1  2.6  6.2  3.6  3.9       3.1  8.0  7.4  4.4  4.2
14Z:  3.3       5.7  3.3  1.9  1.4       3.5                 6.8  3.5  3.0  7.2  2.8  2.9   F   3.5  8.3  5.8  5.3  4.7
15Z:  5.3       4.8  2.5  1.3  2.3  4.9                      7.5  3.0  5.8  8.9   A   2.9  4.2  3.0  7.9  4.7  6.9  5.6
16Z:  6.4       3.4  2.3       2.4  3.1                      9.3  3.4  6.3  7.2   A   3.0  5.8  3.4  8.1  4.2  8.7  4.0
17Z:            2.8  2.5       2.4                           8.7  5.0  8.9  7.5  3.7  3.0  6.4  5.0  7.0       7.7  4.7
18Z:            3.0  2.5            3.6                      7.8       9.3  8.2  5.2  3.2  7.0       7.7       8.2  4.7
19Z:                                                         7.5       9.0  7.6  3.5  3.8  7.2       6.5       8.2  4.7
20Z:                                                         7.5       8.1  6.0  4.7  2.3  7.8       5.2            4.1
21Z:                                                         8.3       7.0  4.7  5.9  2.2   I         B        7.2  4.1
22Z:                                                         5.3       6.5  3.4  6.5  2.6  6.8        B        7.0  5.4
23Z:                                                         3.2       6.3  2.3  6.4  6.5             B        5.8  7.0
=========================================
Estimated Average Global foF2:  5.01 MHz.


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

      BOU  MUR  ASH  SVE  SAL  TOM  DIX  MAG  JUL  WLP  MAU  VBG  GOO  EIE  TAO  CHU  KEA  ARG  NIC  DYS  LEA
     ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
00Z: 21.0  8.4                 7.4  7.0 21.2  9.0 12.8 52.0 23.8  8.6 16.1 27.5      52.8   B  10.6 15.6 16.8
01Z: 15.5  8.4       9.3       7.3      23.1  8.4  8.3 55.9 15.0  7.6 15.7 34.2      56.8   B  10.9 12.2 21.0
02Z:  9.5  7.8 11.2  8.7                26.6  9.3 10.2 41.6 10.1  7.8 11.1 36.0      41.6   B   9.9   A  23.2
03Z:  8.9  7.4 13.0  8.4      19.2  4.6 24.4  8.4   A  34.8  7.8  7.1  9.6 31.4      35.3   B  13.3 10.9 25.2
04Z:   A   6.2 20.8  9.8  5.5 25.5  6.6 22.1  8.4 11.0 31.5  9.2  5.4  7.0 36.0      31.5   B  13.7 11.6 25.8
05Z:   A   5.0 21.8      13.6 26.2  9.3 20.2  9.6 11.1 18.1  7.2  7.8  9.1 35.0      18.4   B  19.2  9.6 27.0
06Z:  8.2  6.1 21.7      15.5      13.2 15.3  9.2  9.9 18.1  8.4 10.5 10.1 32.3      18.1   B  24.7 11.2 26.3
07Z:  9.1  9.9 24.6 19.2 17.2      11.9 10.2 11.8  9.9 20.5   A   7.3  6.7 30.7      20.5   B  24.7 12.0 27.6
08Z:  9.8 14.6 22.8      21.8      13.2  7.2 20.4 12.8 15.3   A   5.8  9.9 40.8      15.3   B  26.9 12.5 29.4
09Z:  9.7 18.6 18.9      17.2      11.6  5.4      15.2 12.4 10.2  6.2  6.7   R       12.6   A  27.7 12.4 28.8
10Z: 10.8 19.7 17.7      17.8       9.8  5.6      12.6  9.4 11.2  7.0  8.7 31.5       9.5   B  27.0 12.3 25.8
11Z: 10.1 19.2 23.8 20.2 16.1 15.2  7.7           10.7 11.4 11.7  8.1  6.5 24.1      11.6   B  21.7 11.3   A
12Z: 10.1 16.0 21.1      11.6 10.9                12.0 10.9 21.6 15.0  7.9 19.6      10.9 21.7 25.5   A  16.7
13Z:  9.4      15.0 13.9  8.5  8.3                26.2  9.8  7.0 22.3  7.9 14.0       9.9 28.0 28.1 15.0 15.1
14Z:           17.7       6.3  4.2      10.5      23.1 11.2  9.0 25.2  6.4  9.6   F  11.2 31.5 22.0 18.6 16.4
15Z:           14.9  7.5  4.3  6.9 15.7           24.0  9.0 20.9 32.0   A   8.4 12.6  9.0 27.6 15.5 24.8 19.0
16Z:           10.5  7.4       7.2                31.6 10.7 21.4 27.4   A   8.4 19.7 10.9 26.7 14.7 30.4 14.8
17Z:            8.4            7.2                28.7 15.0 32.0 26.2  9.6  8.7 21.8 15.0 25.2      24.6 14.6
18Z:            8.4                12.2           25.7      30.7 27.9 12.0 10.9 24.5      27.7      27.9 13.6
19Z:                                              24.8      29.7 26.6 10.5 14.4   I       24.7      28.7 13.2
20Z:                                              25.5      28.4 20.4 15.5  7.6   R       18.7           12.7
21Z:                                              29.1      24.5 16.4 19.5  6.2   I         B       25.2 14.3
22Z:                                              18.0      24.1  9.5 22.8  7.5 23.1        B       25.2 19.4
23Z:                                               9.0      22.1  6.9 21.8 23.4             B       19.7 22.4
===============================================
Estimated Average Global MUF(3000)F2: 16.19 MHz.


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

      BOU  TAO  ANC  CNV  PAL  SHE  OSA
     ---- ---- ---- ---- ---- ---- ----
00Z:  180  330  240       870
01Z:  120  390  160  110  790
02Z:   93  500  120  100  510
03Z:   82  710   92  100  310
04Z:   80  750   68  110  190
05Z:       590   56  110  120
06Z:   80  540   43  110  120
07Z:   80  550   55  120  110
08Z:       540   53  120   77
09Z:   80  400   53  120   73
10Z:   78  260   54  120   51
11Z:   79  210   54  120   51
12Z:   77  160   54  130   51
13Z:   75  120   54  160   48
14Z:   79  120   55  210   52
15Z:  120  120   55  260   46
16Z:  160  110   56  260   60
17Z:  180  110   58  260   70
18Z:  240  100   79  300  130
19Z:  250   99  120  310  170
20Z:  240   83  170  300  170
21Z:  210   82  170  220  180
22Z:  210  120  190  170  220
23Z:  190  210  200  150  300


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

BOU = Boulder CO                 USA                 (N40W105)
MUR = Murmansk                   USSR                (N68E033)
ASH = Ashkhabad                  USSR                (N37E058)
SVE = Sverdlovsk                 USSR                (N56E061)
SAL = Salekhard                  USSR                (N66E066)
TOM = Tomsk                      USSR                (N56E085)
DIX = Dixon                      USSR                (N74E081)
MAG = Magadan                    USSR                (N60E151)
JUL = Juliusruh/Rugen            Germany             (N54E013)
WAR = Warsaw                     Poland              (N52W021)
POI = Poitiers                   France              (N46E000)
WLP = Wallops Island VA          USA                 (N37W075)
MAU = Maui HI                    USA                 (N20W157)
VBG = Vandenberg AFB CA          USA                 (N34W120)
GOO = Goose Bay                  Canada              (N53W060)
EIE = Eielson AFB AK             USA                 (N64W147)
TAO = Taoyuan                    Taiwan              (N25E121)
CHU = Churchill                  Canada              (N58W094)
KEA = Keakawapu HI               USA                 (N20W156)
ARG = Argentia                   Canada              (N48W053)
NIC = Nicosia                    Cyprus              (N35E033)
DYS = Dyess AFB TX               USA                 (N32W099)
LEA = Learmonth                  Australia           (S21E115)
ANC = Anchorage AK               USA                 (N61W150)
CNV = Cape Canaveral FL          USA                 (N28W080)
PAL = Palehua HI                 USA                 (N21W158)
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.


