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From: oler@rho.uleth.ca (Cary Oler)
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Subject: Daily Summary of Ionospheric Data for 30 December
To: solar-daily@lut.fi
Date: Thu, 30 Dec 93 20:28:11 MST
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                    ---------------------------------------
                    DAILY IONOSPHERIC SUMMARY FOR 30 DEC 93
                    ---------------------------------------


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

     BOU  MUR  SVE  SAL  DIX  MAG  ASH  TOM  JUL  WLP  MAU  VBG  GOO  EIE  TAO  CHU  KEA  NIC  DYS  LEA
     ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---
00Z: 3.7  3.6  2.6  2.9  3.0  3.8            3.0  3.1  3.2  3.5  2.7  3.3  3.5       3.2  3.3  3.6  3.0
01Z: 3.5       2.7            3.8  2.9       2.8  3.0  3.3  3.4       3.5  3.7       3.2  3.1   B   2.9
02Z: 3.6       2.7  3.0       3.6  3.0  3.1  2.8  2.8  3.3  4.0       3.3  3.5       3.3  3.3  3.2  2.8
03Z: 3.8       3.0  3.3       3.6  3.1  3.3  2.8  2.6  3.5  4.3       2.8  3.2       3.5  3.0  3.0  2.8
04Z: 3.0  3.1  2.8  3.2  3.1  3.8  3.3  3.5  3.0  2.9  3.7  3.3       3.0  3.4       3.1  3.5   B   2.9
05Z: 3.0  3.0  3.3  3.3  3.4  3.6  3.2  3.5  3.2  3.0  3.6   A        2.4  3.1       3.6   C   2.9  2.8
06Z: 3.0  3.1  3.5       3.3  3.5  3.2  3.3  3.1  3.0   A   2.7       2.4  3.2        A   3.7  3.1  2.9
07Z: 3.0  3.3  3.6       3.3  3.4  3.1  3.4  3.4  2.9  3.4  2.9        A   3.2       3.4  3.5  3.3  3.0
08Z: 3.1       3.3  3.4  3.5  3.4       3.5  3.4  2.9  3.0  3.1        A   3.4       3.0  3.5  3.1  3.1
09Z: 3.1  3.3  3.6  3.4       3.3  3.4  3.4       2.9  3.0  3.1       3.7  3.5       3.0  3.3  3.3  3.2
10Z: 3.2  3.4  3.4  3.4  3.2  3.0  3.0  3.3       2.9  2.7  3.0        A   3.4       2.7  3.4  3.2  3.2
11Z: 3.3  3.4       3.4            3.3  3.2       3.1  2.8  3.0       3.0  3.1       2.8  3.5  2.9  4.0
12Z: 3.5  3.4       3.4  3.3  3.0  3.2  3.2       3.4  3.0  3.1       4.2  3.4       3.0  3.6  3.0  3.7
13Z: 3.5  3.3       3.4  3.0  2.6  3.4  3.1       3.5  3.7  2.8       2.5  3.2       3.7  3.6  3.2  3.2
14Z:      3.3  2.9  3.2  3.1  2.8  3.4            3.4  3.7  2.7       2.8  3.2       3.7  3.7  3.6  2.9
15Z:      3.3  2.8  3.2       2.8  3.2  3.2       3.3  3.1  3.4       2.8  3.0       3.1  3.8  3.6  3.6
16Z:      3.3  2.9  3.0       2.9       3.1       3.3  2.8  3.6  3.5  2.7   I        3.1  3.2  3.6
17Z:      3.3  2.9  3.0            3.0  3.0       3.5  2.9  3.6  3.5  2.9  3.0       2.9  3.3  3.6
18Z:      3.3  3.0            3.1  2.9            3.4       3.2  3.6  2.8  3.4            3.4  3.1  3.7
19Z:                                              3.4       3.3  3.5  3.3  3.2            3.0  3.6  3.1
20Z:                                              3.3       3.3  3.4  3.3  3.2            3.2  3.5  3.4
21Z:                                              3.4       3.2  3.2  3.3  3.0            2.9  3.5  3.4
22Z:                                              3.4       3.4  3.7  3.2  2.8  3.4       2.9  3.3  3.7
23Z:                                              3.2       3.3  3.2  3.5  3.3            2.8  3.5  2.9
=========================================
Estimated Average Global M(3000)F2:  3.22.


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

     MUR  SVE  SAL  DIX  MAG  ASH  TOM
     ---  ---  ---  ---  ---  ---  ---
00Z: 1.0  1.6  1.0  1.4  1.0
01Z: 1.3  1.7       2.0  1.4  2.0
02Z:      1.0  1.0  1.2  1.2  2.0  1.0
03Z:      1.6  1.0  1.9  1.3  2.0  1.7
04Z: 1.0  1.5  1.0  1.5  1.2  2.0  2.1
05Z: 1.0  1.7  1.0  1.2  1.0  2.0  2.6
06Z: 1.0  1.6       1.6  1.0  2.0  3.0
07Z: 1.0  1.0       1.2  1.0  2.0  2.6
08Z:      1.0  1.0  1.1  1.0       2.4
09Z: 1.0  1.4  1.0       1.0  2.0  2.0
10Z: 1.5  1.4  1.0  1.4  1.0  2.0  1.5
11Z: 1.3       1.0            2.0  1.0
12Z: 1.3       1.0  1.8  1.0  2.0  1.0
13Z: 1.0       1.0  1.2  1.0  2.0  1.0
14Z: 1.0  1.5  1.0  1.2  1.0  2.0
15Z: 1.0  1.8  1.0  1.2  1.0  2.0  1.0
16Z: 1.3  1.0  1.0       1.0       1.0
17Z: 1.0  1.8  1.0  1.5       2.0  1.0
18Z: 1.2  1.5       1.5  1.0  2.0
19Z:
20Z:
21Z:
22Z:
23Z:


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

     MUR  SVE  DIX  MAG  ASH  TOM
     ---  ---  ---  ---  ---  ---
00Z:                2.0
01Z: 3.5
02Z:           3.5  1.8       1.3
03Z:           2.5  1.9  3.0
04Z:           2.0  1.8
05Z:           1.9  2.2
06Z:           1.8  1.3
07Z:      2.6       2.2
08Z:      2.1       1.7
09Z: 1.6  2.7       2.4  3.8
10Z:      2.8  1.8  1.2  3.7
11Z:                     3.4
12Z:                1.2
13Z:           2.5       2.9
14Z:           3.0  2.0
15Z:           3.6
16Z:
17Z:           2.5
18Z:           2.8
19Z:
20Z:
21Z:
22Z:
23Z:


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

      BOU  MUR  SVE  SAL  DIX  MAG  ASH  TOM  JUL  WAR  POI  WLP  OTI  MAU  VBG  GOO  EIE  TAO  CHU  KEA  NIC  DYS  LEA
     ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
00Z:  4.0  2.1  2.5  1.2  3.4  6.4            3.2  3.4  4.2  3.6      14.6  5.8  2.7  5.6  8.5      14.6  3.9  3.3  7.7
01Z:  3.7       2.3            7.1  3.5       2.9  3.2  4.0  3.3      13.0  3.8       4.8  9.5      14.6  3.6   B   8.8
02Z:  3.1       2.3  1.4       7.5  4.0  2.9  3.0  3.1  4.0  3.5      11.0  5.7       3.6  9.9      11.0  3.6  2.9  8.8
03Z:  2.1       2.2  1.4       8.1  4.4  5.4  2.8  2.9  3.9  3.9       8.2  2.9       3.7  9.0       8.2  3.5  2.7  9.3
04Z:  1.9  2.0  3.3  2.1  2.1  5.9  5.8  6.1  2.8  3.2  4.2  4.0       6.7  2.3       1.7 10.8       6.7  3.8   B   9.8
05Z:  2.1  2.8  5.3  4.0  3.5  5.8  6.8  7.2  3.1  3.7  4.7  4.1       4.2   A        3.3 11.0       4.2   C   2.9  9.6
06Z:  2.3  3.3  7.4       4.0  5.6  7.9  8.2  3.0  3.4  3.5  3.9       3.5  2.5       4.6 12.6       3.5  6.8  3.1  9.7
07Z:  2.7  3.0  7.6       4.5  3.2  7.3  8.3  4.4  5.5  3.2  3.8       4.1  2.8        A  12.6       4.1  7.5  3.1  9.5
08Z:  3.1       7.4  6.7  4.1  2.4       7.0  6.2  7.1       3.8       3.9  3.0        A  13.5       3.9  7.5  3.3  9.9
09Z:  3.2  5.3  7.3  6.7       1.7  6.2  7.0                 3.8       3.3  2.9       2.9 12.3       3.3  8.0  3.1  9.4
10Z:  3.4  6.0  6.4  5.7  2.3  1.6  7.2  5.7                 3.5       3.3  2.8        A   9.2       3.3  7.2  3.8  8.2
11Z:  3.2  5.9       4.2            6.7  4.7                 3.7       4.2  2.8       2.4  8.1       4.2  7.6  3.4  3.1
12Z:  3.2  4.8       3.2  2.2  1.4  5.3  3.7                 5.1       4.4  2.8       3.6  8.5       4.4  7.6  3.2  4.4
13Z:  3.0  3.9       2.5  3.3  1.9  5.8  2.7                 6.7  5.0  4.7  2.4       3.9  7.6       4.7  7.1  4.1  7.9
14Z:  3.1  3.3 13.1  1.8  3.2  2.2  4.7                      7.7  6.2  3.2  2.8       3.4  3.6       3.2  5.9  6.5  8.2
15Z:  5.7  2.7  2.8  1.4       2.3  3.1  2.4                 7.8  7.2  2.6  6.3       3.3  3.3       2.6  5.4  6.3  3.4
16Z:  6.4  2.4  2.5  1.3       2.3       2.4                 9.8  9.0  3.3  7.1  8.7  3.3   I        2.6  3.8  6.7
17Z:       2.3  2.4  1.2            3.0  2.5                 9.9  8.3  4.3  7.7  8.6  3.0  3.6       4.3  4.4  7.4
18Z:       2.0  3.0            2.5  3.4                      7.8  8.3       6.8  8.5  3.4  3.5            3.6  8.7  4.5
19Z:                                                         7.7            8.4  6.7  4.4  3.1            3.5  8.5  5.4
20Z:                                                         7.3            8.7  6.6  5.5  2.8            3.6  7.9  5.0
21Z:                                                         6.9            7.5  5.2  6.3  2.6            3.1  7.5  4.1
22Z:                                                         4.4            7.2  4.5  7.3  2.3  7.0       3.2  7.2  4.9
23Z:                                                         3.9            7.3  3.2  7.7  5.6            3.3  6.9  6.8
=========================================
Estimated Average Global foF2:  5.03 MHz.


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

      BOU  MUR  SVE  SAL  DIX  MAG  ASH  TOM  JUL  WLP  MAU  VBG  GOO  EIE  TAO  CHU  KEA  NIC  DYS  LEA
     ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
00Z: 14.6  7.6  6.5  3.5 10.2 24.3            9.6 11.2 46.7 20.3  7.3 18.5 29.8      46.7 12.9 11.9 23.1
01Z: 13.0       6.2           27.0 10.2       8.1  9.9 42.9 12.9      16.8 35.2      46.7 11.2   B  25.5
02Z: 11.2       6.2  4.2      27.0 12.0  9.0  8.4  9.8 36.3 22.8      11.9 34.6      36.3 11.9  9.3 24.6
03Z:  8.0       6.6  4.6      29.2 13.6 17.8  7.8 10.1 28.7 12.5      10.4 28.8      28.7 10.5  8.1 26.0
04Z:  5.7  6.2  9.2  6.7  6.5 22.4 19.1 21.4  8.4 11.6 24.5  7.6       5.1 36.7      20.8 13.3   B  28.4
05Z:  6.3  8.4 17.5 13.2 11.9 20.9 21.8 25.2  9.9 12.3 15.1   A        7.9 34.1      15.1   C   8.4 26.9
06Z:  6.9 10.2 25.9      13.2 19.6 25.3 27.1  9.3 11.7   A   6.8      11.0 40.3        A  25.2  9.6 28.1
07Z:  8.2  9.9 27.4      14.8 10.9 22.6 28.2 15.0 11.0 13.9  8.1        A  40.3      13.9 26.2 10.2 28.5
08Z:  9.7      24.4 22.8 14.3  8.2      24.5 21.1 11.0 11.5  9.3        A  45.9      11.7 26.2 10.2 30.7
09Z: 10.0 17.5 26.3 22.8       5.6 21.1 23.8      11.0  9.7  9.0      10.7 43.0       9.9 26.4 10.2 30.1
10Z: 10.8 20.4 21.8 19.4  7.4  4.8 21.6 18.8      10.2  8.9  8.4        A  31.3       8.9 24.5 12.2 26.2
11Z: 10.6 20.1      14.3           22.1 15.0      11.5 11.8  8.4       7.2 25.1      11.8 26.6  9.9 12.4
12Z: 11.2 16.3      10.9  7.3  4.2 17.0 11.8      17.3 13.2  8.7      15.1 28.9      13.2 27.4  9.6 16.3
13Z: 10.5 12.9       8.5  9.9  4.9 19.7  8.4      23.4 17.4  6.7       9.8 24.3      17.4 25.6 13.1 25.3
14Z:      10.9 38.0  5.8  9.9  6.2 16.0           26.2 11.7  7.6       9.5 11.5      11.8 21.8 23.4 23.8
15Z:       8.9  7.8  4.5       6.4  9.9  7.7      25.7  8.1 21.4       9.2  9.9       8.1 20.5 22.7 12.2
16Z:       7.9  7.2  3.9       6.7       7.4      32.3  9.4 25.6 30.4  8.9   I        8.1 12.2 24.1
17Z:       7.6  7.0  3.6            9.0  7.5      34.6 12.5 27.7 30.1  8.7 10.8      12.5 14.5 26.6
18Z:       6.6  9.0            7.8  9.9           26.5      21.8 30.6  9.5 11.9           12.2 27.0 16.6
19Z:                                              26.2      27.7 23.4 14.5  9.9           10.5 30.6 16.7
20Z:                                              24.1      28.7 22.4 18.1  9.0           11.5 27.6 17.0
21Z:                                              23.5      24.0 16.6 20.8  7.8            9.0 26.2 13.9
22Z:                                              15.0      24.5 16.6 23.4  6.4 23.8       9.3 23.8 18.1
23Z:                                              12.5      24.1 10.2 26.9 18.5            9.2 24.1 19.7
===============================================
Estimated Average Global MUF(3000)F2: 16.21 MHz.


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

      BOU  TAO  ANC  CNV  PAL  SHE  OSA
     ---- ---- ---- ---- ---- ---- ----
00Z:  150  250  230       580
01Z:   99  330  200   89  500
02Z:   89  400  160   92  350
03Z:   77  510  130   94  210
04Z:       660   97  100  130
05Z:   74  660   90  100   79
06Z:   76  630   91  100   52
07Z:       610   93  110   54
08Z:   76  620   91  110   51
09Z:   77  460   92  110   47
10Z:   77  350   94  110   49
11Z:   79  290   95  120   47
12Z:   78  220   93  130   57
13Z:   75  170   92  170   67
14Z:   76  130   92  200   60
15Z:  120  120   93  230   43
16Z:  140  120   97  270   49
17Z:  170  120  100  310   70
18Z:  230  110  120  310  170
19Z:  260   98  170  280  230
20Z:  270   89  180  280  250
21Z:        79  230  230  280
22Z:  220  110  220  210  310
23Z:  210  240  210  160  340


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

BOU = Boulder CO                 USA                 (N40W105)
MUR = Murmansk                   USSR                (N68E033)
SVE = Sverdlovsk                 USSR                (N56E061)
SAL = Salekhard                  USSR                (N66E066)
DIX = Dixon                      USSR                (N74E081)
MAG = Magadan                    USSR                (N60E151)
ASH = Ashkhabad                  USSR                (N37E058)
TOM = Tomsk                      USSR                (N56E085)
JUL = Juliusruh/Rugen            Germany             (N54E013)
WAR = Warsaw                     Poland              (N52W021)
POI = Poitiers                   France              (N46E000)
WLP = Wallops Island VA          USA                 (N37W075)
OTI = Ottawa                     Canada              (N45W076)
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)
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.


