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From: oler@rho.uleth.ca (Cary Oler)
Message-Id: <9401010425.AA03012@rho.uleth.ca>
Subject: Daily Summary of Ionospheric Data for 31 December
To: solar-daily@lut.fi
Date: Fri, 31 Dec 93 21:25:20 MST
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                    ---------------------------------------
                    DAILY IONOSPHERIC SUMMARY FOR 31 DEC 93
                    ---------------------------------------


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

     WLP  MUR  SVE  SAL  DIX  MAG  MAU  VBG  GOO  EIE  TAO  KEA  NIC  DYS  LEA
     ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---
00Z: 2.9  3.0  2.8  2.9  3.0  3.6  3.0  3.5  2.8  3.3  3.6  3.0  2.9  3.8  2.9
01Z: 3.1                           3.3  3.3  2.7       3.6  3.4  3.1  2.9  3.0
02Z: 2.7                           3.3  2.9  2.4  3.3  3.6  3.3  3.2   A   3.2
03Z: 2.8                           3.5   B   2.5  3.2  3.3  3.5  3.4   B   2.8
04Z: 2.7                           3.6  3.5  3.1  2.2  3.3  3.6  3.1  2.9  2.8
05Z: 3.0                           3.2   A   2.6  3.5  3.3  3.3  3.5  2.8  2.8
06Z: 2.7                           3.0  2.8   A   3.3  3.2  3.0       2.9  2.8
07Z: 2.6                           3.5  2.9  2.3   A   3.2  3.5       2.8  3.2
08Z: 2.7                           3.0  2.7   A    A   3.3  3.0       2.7  2.8
09Z: 2.9                           2.7  2.7  2.6   A   3.5  2.7       2.6  3.5
10Z: 2.6                           3.0  2.9  2.8  3.6  3.1  3.0       3.0  3.8
11Z: 2.7                           3.3  2.8  3.3  3.8  3.7  3.4       2.6   B
12Z: 3.3                            F   3.3  3.2  2.4  3.2   A        2.6   B
13Z: 3.4  2.8       2.9       3.0  3.4  2.8  3.1   A   3.1  3.4       3.2  3.6
14Z: 3.4  3.1       2.9  2.6  2.8   F   2.7  3.2  2.5  3.7   A        3.5  3.4
15Z: 3.0  3.1                 3.8  3.3  3.1  3.2  2.6  2.6  3.3       3.3  3.4
16Z: 3.2  3.4            2.8  2.6  2.7  3.1  3.0  2.4  2.7  2.7       3.3  3.5
17Z: 3.3                      2.8  3.3  3.0  3.0   B   3.0  3.3  3.1  3.2  3.1
18Z: 3.3            2.6       2.8       3.2  3.1  2.7  3.2       3.1  3.3  3.2
19Z: 3.1                                3.3  3.3  3.0  3.1       3.1  3.3  3.4
20Z: 3.3                                3.2  3.2  3.0  3.1       3.1  3.1  3.8
21Z: 3.4                                3.4  3.0        A        3.1  3.4  3.2
22Z: 3.2                                3.4  3.1  2.9  2.8       2.9  3.4  3.6
23Z: 3.2                                3.4  2.4  2.7  3.4       2.9  3.4  2.9
=========================================
Estimated Average Global M(3000)F2:  3.09.


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

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


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

     MUR  SAL  DIX  MAG
     ---  ---  ---  ---
00Z:           1.8  2.0
01Z:
02Z:
03Z:
04Z:
05Z:
06Z:
07Z:
08Z:
09Z:
10Z:
11Z:
12Z:
13Z: 4.1  4.6       1.0
14Z: 3.7  2.0  3.4
15Z: 3.0  2.0  3.2  1.5
16Z: 3.0  2.0  6.2  2.0
17Z: 5.8  2.5  5.4  2.1
18Z: 4.9  5.0       1.8
19Z:
20Z:
21Z:
22Z:
23Z:


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

      WLP  MUR  SVE  SAL  DIX  MAG  MAU  VBG  GOO  EIE  TAO  KEA  NIC  DYS  LEA  POI  WAR  OTI
     ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
00Z:  3.7  1.5  3.2  1.2  4.1  8.4 10.5  6.9  2.8  5.9  9.7 10.5  3.8  3.4  8.4  3.9  3.9
01Z:  3.5                          10.8  3.7  2.4       9.2 10.8  4.1  2.8  9.4  3.9  3.7
02Z:  3.6                           9.5  2.6  2.9  4.7 10.0  9.5  4.3   A  10.1  4.0  3.6
03Z:  3.8                           6.9   B   2.6  3.3 10.2  6.9  4.3   B   9.0  3.9  3.5
04Z:  4.5                           5.7  2.4  2.6  3.4  9.7  5.7  4.9  2.8  9.5  4.2  3.5
05Z:  4.3                           3.8   A   3.6  3.9 10.0  3.8  6.9  3.3  9.8  3.9  4.0
06Z:  4.2                           4.3  2.7   A   5.2  9.5  4.3       3.7  9.9  4.3  3.8
07Z:  3.8                           5.6  3.1 10.9   A   9.4  5.6       4.3  9.4  4.2  5.9
08Z:  3.5                           5.8  3.1   A    A   9.0  5.8       4.5 10.4       7.7
09Z:  3.4                           4.7  3.2  4.3   A   8.2  4.7       4.8  8.3
10Z:  4.0                           5.6  3.3  5.6  5.6  6.8  5.6       4.9  6.0
11Z:  4.4                           6.7  3.6  4.6  6.2  5.7  6.7       4.9   B
12Z:  6.0                           5.4  3.4  4.7  5.1  5.9  5.4       5.1   B
13Z:  6.7  2.7       4.3       2.9  3.6  3.1  5.3   A   5.6  3.6       4.2  4.5            4.2
14Z:  7.6  4.3 12.0  4.0  4.0  2.7  3.3  3.5  6.1  3.7  3.8  3.3       6.5  3.0            5.8
15Z:  8.8  4.7                 2.3  2.9  5.5  6.3  3.1  2.8  2.9       6.9  3.8
16Z:  9.9  3.0            3.6  2.0  2.5  7.5  7.0  2.9  3.1  2.5       8.5  4.6
17Z:  9.9                      1.8  4.2  8.6  7.9   B   3.8  4.2  4.9  9.7  5.2
18Z:  9.9            3.8       1.6       9.8  8.0  3.1  3.9       5.0  9.2  5.3
19Z:  9.8                               11.3  7.5  3.8  3.6       4.5  9.9  5.4
20Z:  9.6                                9.8  6.3  4.0  3.8       4.2  9.9  3.3
21Z:  8.2                                8.9  4.1        A        3.6  9.8  3.6
22Z:  6.4                                7.9  2.2  4.7  3.3       3.3  7.6  4.7
23Z:  5.5                                6.9  5.8  5.2  4.7       3.3  6.7  6.6
=========================================
Estimated Average Global foF2:  5.43 MHz.


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

      WLP  MUR  SVE  SAL  DIX  MAG  MAU  VBG  GOO  EIE  TAO  KEA  NIC  DYS  LEA
     ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
00Z: 10.7  4.5  9.0  3.5 12.3 30.2 31.5 24.1  7.8 19.5 34.9 31.5 11.0 12.9 24.4
01Z: 10.8                          36.2 12.2  6.5      33.1 36.7 12.7  8.1 28.2
02Z:  9.7                          31.4  7.5  7.0 15.5 36.0 31.4 13.8   A  32.3
03Z: 10.6                          24.1   B   6.5 10.6 33.7 24.1 14.6   B  25.2
04Z: 12.2                          20.5  8.4  8.1  7.5 32.0 20.5 15.2  8.1 26.6
05Z: 12.9                          12.3   A   9.4 13.7 33.0 12.5 24.1  9.2 27.4
06Z: 11.3                          12.9  7.6   A  17.2 30.4 12.9      10.7 27.7
07Z:  9.9                          19.3  9.0 25.1   A  30.1 19.6      12.0 30.1
08Z:  9.4                          17.1  8.4   A    A  29.7 17.4      12.2 29.1
09Z:  9.9                          12.7  8.6 11.2   A  28.7 12.7      12.5 29.1
10Z: 10.4                          16.5  9.6 15.7 20.2 21.1 16.8      14.7 22.8
11Z: 11.9                          22.4 10.1 15.2 23.6 21.1 22.8      12.7   B
12Z: 19.8                            F  11.2 15.0 12.2 18.9   A       13.3   B
13Z: 22.8  7.6      12.5       8.7 12.2  8.7 16.4   A  17.4 12.2      13.4 16.2
14Z: 25.8 13.3      11.6 10.4  7.6   F   9.4 19.5  9.2 14.1   A       22.8 10.2
15Z: 26.4 14.6                 8.7  9.6 17.0 20.2  8.1  7.3  9.6      22.8 12.9
16Z: 31.7 10.2           10.1  5.2  6.6 23.2 21.0  7.0  8.4  6.8      28.0 16.1
17Z: 32.7                      5.0 13.9 25.8 23.7   B  11.4 13.9 15.2 31.0 16.1
18Z: 32.7            9.9       4.5      31.4 24.8  8.4 12.5      15.5 30.4 17.0
19Z: 30.4                               37.3 24.8 11.4 11.2      13.9 32.7 18.4
20Z: 31.7                               31.4 20.2 12.0 11.8      13.0 30.7 12.5
21Z: 27.9                               30.3 12.3        A       11.2 33.3 11.5
22Z: 20.5                               26.9  6.8 13.6  9.2       9.6 25.8 16.9
23Z: 17.6                               23.5 13.9 14.0 16.0       9.6 22.8 19.1
===============================================
Estimated Average Global MUF(3000)F2: 16.78 MHz.


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

      BOU  TAO  ANC  CNV  PAL  SHE  OSA
     ---- ---- ---- ---- ---- ---- ----
00Z:  160  350  200  120  390
01Z:  100  410  160  100  350
02Z:   84  460  140  110  240
03Z:   75  550   99  110  160
04Z:   73  420   66  110  110
05Z:   74  390   51  110   77
06Z:   77  340   51  120   76
07Z:   81  300   55  140   93
08Z:   90  310   81  150   93
09Z:   99  330  100  160   80
10Z:  100        96  160   91
11Z:  110        60  160   89
12Z:  110        59  140   64
13Z:  110        59  200   58
14Z:  100        62  200   45
15Z:  150        57  290   50
16Z:  200  120   58  370   47
17Z:  270  120   61  440   72
18Z:  340  120   80  440  170
19Z:  380   94  120  420  270
20Z:        90  160  410  340
21Z:  310   94  170  380  370
22Z:       120  190  280  340
23Z:  220  240  220  200  330


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

BOU = Boulder CO                 USA                 (N40W105)
WLP = Wallops Island VA          USA                 (N37W075)
MUR = Murmansk                   USSR                (N68E033)
SVE = Sverdlovsk                 USSR                (N56E061)
SAL = Salekhard                  USSR                (N66E066)
DIX = Dixon                      USSR                (N74E081)
MAG = Magadan                    USSR                (N60E151)
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)
KEA = Keakawapu HI               USA                 (N20W156)
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)
POI = Poitiers                   France              (N46E000)
WAR = Warsaw                     Poland              (N52W021)
OTI = Ottawa                     Canada              (N45W076)
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.


