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From: oler@rho.uleth.ca (Cary Oler)
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Subject: Daily Summary of Ionospheric Data for 19 October
To: solar-daily@lut.fi
Date: Wed, 20 Oct 93 7:43:27 MDT
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Status: RO

                    ---------------------------------------
                    DAILY IONOSPHERIC SUMMARY FOR 19 OCT 93
                    ---------------------------------------


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

     MUR  ASH  SVE  SAL  TOM  DIX  MAG  JUL  UPS  BOU  WLP  MAU  GOO  EIE  TAO  CHU  ARG  BER  NIC  DYS  LEA
     ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---
00Z:           2.7       3.1       3.4  3.0  3.0  3.6  3.1  3.1  2.5  3.1  3.3       3.2  2.9  3.2       2.6
01Z: 2.7                 3.2       3.2  2.9            3.0  3.2  4.2  3.4  3.3       2.8  2.8  3.3       2.7
02Z:           2.7       3.1       3.5  3.0  2.8       2.8  3.2  2.6  3.2  3.0       2.8  3.0  3.4        A
03Z:      2.8       3.2            3.6  2.8            2.8  3.5  2.6  3.3  3.1       2.8  2.7  3.5       3.0
04Z: 2.7  3.4  3.1  3.1  3.2  3.1       3.0            2.5  3.5  2.7  3.2  3.1       2.5  2.8   C        3.0
05Z: 3.1  3.1            3.2       3.6  3.0  3.2       2.6  3.3  3.0  2.5  3.2       2.6  3.0  3.6       3.0
06Z:      3.4  3.0       3.3  3.2  3.5  3.3            2.8  3.2  2.9  3.7  3.2       3.0  3.3  3.5       3.1
07Z: 3.2  3.3            3.3       3.2  3.6            3.1  2.8  3.1  3.3  3.4       3.0  3.3  3.6       2.9
08Z: 3.1  3.2  3.0       3.4  3.3  3.2  3.5            3.0  3.0  3.2   A   3.4       3.3  3.4  3.2       3.1
09Z: 3.2  3.2  3.1  3.2       3.4  3.2                 3.2  2.8  2.2  4.0  3.4       3.0  3.1  3.2       3.4
10Z: 3.3  3.2  3.0  3.3  3.4       3.0                 2.9  3.1  3.0  3.3  3.3        A   3.3  3.1       3.2
11Z: 3.3       3.1  3.3  3.3       3.0                 3.5  3.2  3.4   A   3.1       3.3  3.8  3.1       3.3
12Z: 3.3  3.3  3.0  3.1  3.2                           3.4  3.3  3.7  4.1  3.2       3.3  4.0  3.2       3.1
13Z: 3.3  3.0       3.0  3.4       3.1                 3.4  3.5  3.5  3.6  2.8   R   3.1  3.4  3.4  3.5  2.9
14Z: 3.1  3.1       3.1  3.1  3.1  3.0                 3.2  3.2  3.4  3.9  2.8   R   3.2  3.1  3.5  3.5  2.9
15Z: 3.0  2.9                      3.0                 3.2  3.2  3.6  3.8  2.8  3.3  3.3  3.3  3.5  3.6  2.9
16Z:      2.8  2.7                 3.0                 3.2  3.0  3.5  2.4  3.2   I   3.2  3.7  3.7  3.3  3.3
17Z: 3.3  2.9       2.7            3.0                 3.2  3.5  3.1  2.8  3.5       3.3  3.3  3.4  3.4  2.6
18Z:      2.5       2.7            2.9                 3.1       3.3  3.0   C   3.2  3.3  3.2  2.9  3.4  2.9
19Z:                                                   3.2       3.2  3.1  2.9   C   3.4  3.3  3.1  3.5
20Z:                                                   3.3       3.2  3.2  3.0  3.3  3.3  3.9  3.1  3.3  3.2
21Z:                                                   3.4       3.3  3.1  3.0  3.1  3.2  4.0  3.1  3.4  3.0
22Z:                                                   3.5       3.1  3.1  3.4       3.2  3.0  2.8  3.3  3.4
23Z:                                                   3.0       2.9  3.1  3.6       2.7   A   2.9  3.6  3.5
=========================================
Estimated Average Global M(3000)F2:  3.17.


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

     MUR  ASH  SVE  SAL  TOM  DIX  MAG
     ---  ---  ---  ---  ---  ---  ---
00Z: 1.0       1.0       1.5  1.0  1.2
01Z: 1.0                 1.0  1.2  1.4
02Z: 1.0       1.8       1.3       1.2
03Z:      2.0       1.8            1.2
04Z: 1.2  2.0  1.5  1.0  1.3  2.3
05Z: 1.0  2.0  1.6       1.2       1.1
06Z:      2.0  1.5       1.0  2.5  1.0
07Z: 2.1  2.0            1.3       1.0
08Z: 2.2  2.0  1.6       1.1  1.5  1.0
09Z: 2.3  2.0  1.5  1.0       2.5  1.0
10Z: 2.4  2.0  1.7  1.0  1.0  1.5  1.4
11Z: 2.2       1.6  1.0  1.0  1.4  1.0
12Z: 2.7  2.0  1.6  1.0  1.0  1.2
13Z: 2.0  1.6  1.7  1.0  1.0  1.3  1.1
14Z: 1.8  1.7  1.6  1.9  1.6  1.0  1.1
15Z: 1.0  1.7  1.0  3.0       1.0  1.1
16Z: 1.0  1.8  1.6  1.5       1.6  1.0
17Z: 1.0  1.8  1.8  1.9       1.0  1.0
18Z: 1.0  1.8  1.5  2.0       1.0  1.0
19Z:
20Z:
21Z:
22Z:
23Z:


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

     MUR  ASH  SVE  SAL  TOM  DIX  MAG
     ---  ---  ---  ---  ---  ---  ---
00Z: 4.0       2.4            3.8  2.7
01Z: 4.3                      3.8  2.6
02Z: 4.8                 1.9       2.6
03Z:                               2.5
04Z: 2.0                 2.5  2.8
05Z:      4.0  2.5       2.5       2.5
06Z:      3.2  7.0       3.0       2.5
07Z:      5.3            2.6       2.0
08Z:      5.0  4.3       5.0       3.0
09Z:      4.0  4.0                 2.7
10Z:      3.7  2.8       4.0  3.0  3.0
11Z:                     3.5  3.6  2.0
12Z:      3.5  2.2       2.7  4.2
13Z:      2.6                 5.0  2.7
14Z:      2.4  2.4            2.6  1.8
15Z: 2.2       2.3  5.0       5.4
16Z: 3.9  4.0       4.0       5.2
17Z: 3.2  3.0                 4.8
18Z: 3.4  3.6                 6.2
19Z:
20Z:
21Z:
22Z:
23Z:


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

      MUR  ASH  SVE  SAL  TOM  DIX  MAG  JUL  UPS  POI  WAR  BOU  WLP  MAU  OTI  GOO  EIE  TAO  RES  CHU  ARG  BER  NIC  DYS  LEA
     ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
00Z:            3.2       3.0       5.4  3.8  2.1  4.3  4.0  6.6  4.3 14.6       2.8  6.0  9.0   F        2.4  3.6  4.1       5.1
01Z:  2.8                 3.5       6.4  3.8       4.2  3.6       3.5 14.1       8.2  6.1  9.6   F        2.3  3.8  4.0       5.7
02Z:            3.4       4.8       6.7  3.7  2.6  4.2  3.7       3.6 12.7       3.7  5.8 11.0   F        2.2  3.2  3.8        A
03Z:       6.7       3.4            6.6  3.2       4.2  3.5       3.6 11.6       3.0  5.7 13.4   F        2.3  4.0  4.0       7.9
04Z:  2.9  8.3  5.8  4.2  6.5  4.5       2.8       3.9  3.0       3.4 10.4       3.0  3.5 16.3   F        2.4  4.2   C        8.0
05Z:  3.2  9.0  6.3       7.0       6.2  2.8  2.1  3.8  4.3       4.0  7.3       3.3  3.5 15.2   F        2.3  4.1  7.3       7.6
06Z:       9.5  6.6       7.5  5.0  6.1  5.2       4.1  6.6       4.0  6.2       3.0  3.6 15.3            2.3  4.4  8.4       6.3
07Z:  5.4  9.2            7.8       5.5  6.6       6.0  8.2       3.8  4.7       2.7  4.7 14.8            2.5  4.4  8.6       6.3
08Z:  5.5  9.0  7.3       7.8  5.3  5.1  6.6            8.5       3.8  5.0       2.6   A  14.6            2.4  3.4  7.3       6.5
09Z:  5.4  9.0  7.0  6.0       5.0  4.5                           3.6  5.5      12.8  3.7 11.2            2.2  2.5  9.6       6.5
10Z:  5.6  9.0  6.6  5.7  7.1       3.9                           3.1  4.9       2.6  4.4  8.6             A   2.8 10.2       6.2
11Z:  5.6       7.0  5.3  6.7       3.8                           4.8  5.3       5.5   A   6.9            4.9  6.2 10.1       5.2
12Z:  5.5  8.7  6.3  5.1  5.6                                     7.1  5.8  4.9  6.0  7.1  6.0            5.9  6.3  9.7       5.8
13Z:  5.4  8.6  6.3  4.3  5.3       3.4                           8.4  5.1  7.3  6.3  5.1  6.0        R   6.3  7.6 10.2  6.6  5.8
14Z:  5.2  6.4  6.1  3.8  4.1  3.7  3.2                           7.5  3.4  7.2  6.3  3.9  5.0        R   6.0  8.7  9.1  8.9  5.5
15Z:  5.2  4.0  4.0                 2.8                           7.9  2.7  7.7  5.6  3.3  5.2       6.4  6.0  9.3  8.3  8.2  5.6
16Z:       4.4  4.3                 2.8                           8.5  2.9  7.3  5.9  3.7  4.7        I   5.8  8.3  6.2  8.6  5.0
17Z:  3.3  3.8  4.3  2.9            2.8                           9.2  6.1  8.0  6.0  3.8  4.6   F        6.3  8.9  3.9  8.4  4.1
18Z:       3.8  4.3  3.0            2.7                           9.0       8.0  6.2  4.5   C        8.3  6.6  9.3  3.6  8.2  4.0
19Z:                                                              9.9            6.1  4.7  2.8        C   7.0 10.6  4.0  8.0
20Z:                                                              9.9            6.2  4.8  3.0       7.9  6.6  8.4  4.0  8.8  3.9
21Z:                                                              8.3            5.9  4.9  3.0       7.3  5.6  5.9  3.9  8.5  4.0
22Z:                                                              6.4            4.9  4.9  5.0  5.6       4.4  4.2  4.1  8.6  5.7
23Z:                                                              4.8            3.7  5.1  8.5   F        3.5   A   4.2  8.4  5.8
=========================================
Estimated Average Global foF2:  5.79 MHz.


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

      MUR  ASH  SVE  SAL  TOM  DIX  MAG  JUL  UPS  BOU  WLP  MAU  GOO  EIE  TAO  CHU  ARG  BER  NIC  DYS  LEA
     ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
00Z:            8.6       9.3      18.4 11.4  6.3 23.6 13.3 45.3  7.0 18.6 29.7       7.7 10.4 13.1      13.3
01Z:  7.6                11.2      20.5 11.0           10.5 44.4 34.4 20.7 31.7       6.4 10.6 13.2      15.4
02Z:            9.2      14.9      23.4 11.1  7.3      10.1 41.3  9.6 18.6 33.0       6.2  9.6 12.9        A
03Z:      18.8      10.9           23.8  9.0           10.1 40.0  7.8 18.8 41.5       6.4 10.8 14.0      23.7
04Z:  7.8 28.2 18.0 13.0 20.8 13.9       8.4            8.5 36.9  8.1 11.2 50.5       6.0 11.8   C       24.0
05Z:  9.9 27.9           22.4      22.3  8.4  6.6      10.4 24.5  9.9  8.8 48.6       6.0 12.3 26.3      22.8
06Z:      32.3 19.8      24.8 16.0 21.4 17.2           11.2 19.5  8.7 13.3 49.0       6.9 14.5 29.4      19.5
07Z: 17.3 30.4           25.7      17.6 23.8           11.8 13.4  8.4 15.5 50.3       7.5 14.5 31.0      18.3
08Z: 17.0 28.8 21.9      26.5 17.5 16.3 23.1           11.4 14.8  8.3   A  49.6       7.9 11.6 23.4      20.1
09Z: 17.3 28.8 21.7 19.2      17.0 14.4                11.5 15.7 28.2 14.8 38.1       6.6  7.8 30.7      22.1
10Z: 18.5 28.8 19.8 18.8 24.1      11.7                 9.0 15.2  7.8 14.5 28.4        A   9.2 31.6      19.8
11Z: 18.5      21.7 17.5 22.1      11.4                16.8 16.7 18.7   A  21.4      16.2 23.6 31.3      17.2
12Z: 18.1 28.7 18.9 15.8 17.9                          24.1 19.4 22.2 29.1 19.2      19.5 25.2 31.0      18.0
13Z: 17.8 25.8      12.9 18.0      10.5                28.6 18.1 22.1 18.4 16.8   R  19.5 25.8 34.7 23.1 16.8
14Z: 16.1 19.8      11.8 12.7 11.5  9.6                24.0 11.1 21.4 15.2 14.0   R  19.2 27.0 31.9 31.1 16.0
15Z: 15.6 11.6                      8.4                25.3  8.8 20.2 12.5 14.6 21.1 19.8 30.7 29.1 29.5 16.2
16Z:      12.3 11.6                 8.4                27.2  8.8 20.6  8.9 15.0   I  18.6 30.7 22.9 28.4 16.5
17Z: 10.9 11.0       7.8            8.4                29.4 21.7 18.6 10.6 16.1      20.8 29.4 13.3 28.6 10.7
18Z:       9.5       8.1            7.8                27.9      20.5 13.5   C  26.6 21.8 29.8 10.4 27.9 11.6
19Z:                                                   31.7      19.5 14.6  8.1   C  23.8 35.0 12.4 28.0
20Z:                                                   32.7      19.8 15.4  9.0 26.1 21.8 32.8 12.4 29.0 12.5
21Z:                                                   28.2      19.5 15.2  9.0 22.6 17.9 23.6 12.1 28.9 12.0
22Z:                                                   22.4      15.2 15.2 17.0      14.1 12.6 11.5 28.4 19.4
23Z:                                                   14.4      10.7 15.8 30.6       9.4   A  12.2 30.2 20.3
===============================================
Estimated Average Global MUF(3000)F2: 18.37 MHz.


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

      BOU  TAO  ANC  CNV  PAL  SHE  OSA
     ---- ---- ---- ---- ---- ---- ----
00Z:  160  320  510
01Z:  120  460  510  110
02Z:   91  730  500   87
03Z:   79  750  490   91
04Z:   71  730  470   93
05Z:   72  770  440   88
06Z:   72  720  420   91
07Z:       600  410  100
08Z:   73  480  410  100
09Z:   72  320  400  100
10Z:   67  240  400  100
11Z:   65  180  400   97
12Z:   60  140  400  130
13Z:   57  130  400  190
14Z:   84  120  400  240
15Z:  120  110  400  290
16Z:  150  120  400  310
17Z:  160  120  410  290
18Z:  170  120  440  310
19Z:  190  110  450  320
20Z:       120       310
21Z:  190  120  470  290
22Z:  200  180  470  250
23Z:  190  250  480  200


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

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)
UPS = Uppsala                    Sweden              (N60E018)
POI = Poitiers                   France              (N46E000)
WAR = Warsaw                     Poland              (N52W021)
BOU = Boulder CO                 USA                 (N40W105)
WLP = Wallops Island VA          USA                 (N37W075)
MAU = Maui HI                    USA                 (N20W157)
OTI = Ottawa                     Canada              (N45W076)
GOO = Goose Bay                  Canada              (N53W060)
EIE = Eielson AFB AK             USA                 (N64W147)
TAO = Taoyuan                    Taiwan              (N25E121)
RES = Resolute Bay               Canada              (N74W094)
CHU = Churchill                  Canada              (N58W094)
ARG = Argentia                   Canada              (N48W053)
BER = Bermuda                    Bermuda             (N32W064)
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.


