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From: oler@rho.uleth.ca (Cary Oler)
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Subject: Daily Summary of Ionospheric Data for 02 May
To: solar-daily@lut.fi
Date: Sun, 2 May 93 23:54:05 MDT
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                    ---------------------------------------
                    DAILY IONOSPHERIC SUMMARY FOR 02 MAY 93
                    ---------------------------------------


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

     MUR  SAL  ASH  TOM  DIX  KHA  MAG
     ---  ---  ---  ---  ---  ---  ---
00Z: 3.1  3.1       2.9
01Z: 3.1       3.1            3.0
02Z: 2.9  2.8  3.2  3.0       3.1
03Z: 3.2  2.8  3.2  3.0  2.4  3.1
04Z: 2.9  3.0  3.2  3.0       3.1
05Z: 2.8       2.9  3.0       3.2
06Z: 2.8  2.9  2.7  2.9       3.0  3.0
07Z: 2.7  2.8  2.8  3.1       3.1  3.0
08Z: 2.8  2.9  2.7  3.0       3.0  3.0
09Z: 3.1  3.0  2.9  3.2  2.8  3.0  3.1
10Z: 3.1  3.0  2.9  3.1  2.8  3.0  3.0
11Z: 3.0  3.1  3.0  3.1  2.8       3.0
12Z:
13Z:
14Z:
15Z:
16Z:
17Z:
18Z:
19Z:
20Z:
21Z:
22Z:
23Z:


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

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


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

     MUR  ASH  TOM  KHA  MAG
     ---  ---  ---  ---  ---
00Z:
01Z:                4.0  3.5
02Z:      3.0  3.4  4.0  3.4
03Z:      3.1  3.5  3.9  3.3
04Z:      3.7  3.5       3.2
05Z:      4.0  4.0       2.9
06Z:      3.6
07Z:      4.1  3.6       1.9
08Z: 3.6  4.2       3.0  1.9
09Z:      4.0       2.4
10Z:      4.2
11Z:      4.0
12Z:
13Z:
14Z:
15Z:
16Z:
17Z:
18Z:
19Z:
20Z:
21Z:
22Z:
23Z:


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

      MUR  SAL  ASH  TOM  DIX  KHA  MAG
     ---- ---- ---- ---- ---- ---- ----
00Z:  4.0  5.0       6.0
01Z:  4.4       5.5            5.8  4.6
02Z:  5.2  5.0  5.7  6.5       6.5  4.6
03Z:  5.3  5.1  7.6  6.9  5.2  7.3  4.9
04Z:  5.3  5.4  8.2  7.0       7.6  5.0
05Z:  5.8       9.0  7.4  5.0  7.4  5.1
06Z:  5.8  5.7  9.0  7.5  6.0  7.4  5.6
07Z:  6.0  6.1  8.9  8.2  5.0  7.7  5.7
08Z:  5.9  6.5 10.2  8.0  5.2  7.3  5.6
09Z:  6.3  6.8 10.4  8.2  5.1  7.7  5.7
10Z:  6.4  6.7 10.2  7.4  5.1  8.0  5.6
11Z:  6.4  6.4 10.1  7.1  5.2       5.9
12Z:
13Z:
14Z:
15Z:
16Z:
17Z:
18Z:
19Z:
20Z:
21Z:
22Z:
23Z:


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

      MUR  SAL  ASH  TOM  DIX  KHA  MAG
     ---- ---- ---- ---- ---- ---- ----
00Z: 12.4 15.5      17.4
01Z: 13.6      17.0           17.4
02Z: 15.1 14.0 18.2 19.5      20.1
03Z: 17.0 14.3 24.3 20.7 12.5 22.6
04Z: 15.4 16.2 26.2 21.0      23.6
05Z: 16.2      26.1 22.2      23.7
06Z: 16.2 16.5 24.3 21.8      22.2 16.8
07Z: 16.2 17.1 24.9 25.4      23.9 17.1
08Z: 16.5 18.9 27.5 24.0      21.9 16.8
09Z: 19.5 20.4 30.2 26.2 14.3 23.1 17.7
10Z: 19.8 20.1 29.6 22.9 14.3 24.0 16.8
11Z: 19.2 19.8 30.3 22.0 14.6      17.7
12Z:
13Z:
14Z:
15Z:
16Z:
17Z:
18Z:
19Z:
20Z:
21Z:
22Z:
23Z:


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

      PAL  SHE  OSA  TAO  CNV  BOU  ANC
     ---- ---- ---- ---- ---- ---- ----
00Z:  700  210       200  250  250  150
01Z:  690  210       270  200  240  140
02Z:  630  220       350  200  230  130
03Z:  550  230       430  160  210  120
04Z:  500  230       520  150  170  120
05Z:  400  240       550  150  160  120
06Z:  370  240       610  150  150  120
07Z:  180  250       700  150  160  110
08Z:  150  250       710  150  160   99
09Z:  130  160       700  140  160   78
10Z:  120  190       670  150  160   68
11Z:   99  190       610  140  160   59
12Z:   88  110       540  170  160   59
13Z:   78  140       500  200  190   61
14Z:   73  130            230  240   69
15Z:   72  130       380  260  280   91
16Z:   80  120            290       120
17Z:  150  110            310  330  170
18Z:  240  190            330  330  180
19Z:  300  190            340  330  190
20Z:  340  190       110  370  340  190
21Z:  370  200        94  370  330  180
22Z:  430  200       140       330  190
23Z:  490  140       200  310  300  170


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

MUR = Murmansk                   USSR                (N68E033)
SAL = Salekhard                  USSR                (N66E066)
ASH = Ashkhabad                  USSR                (N37E058)
TOM = Tomsk                      USSR                (N56E085)
DIX = Dixon                      USSR                (N74E081)
KHA = Khabarovsk                 USSR                (N48E135)
MAG = Magadan                    USSR                (N60E151)
PAL = Palehua HI                 USA                 (N21W158)
SHE = Shemya AK                  USA                 (N52E174)
OSA = Osan AB                    Korea               (N37E127)
TAO = Taoyuan                    Taiwan              (N25E121)
CNV = Cape Canaveral FL          USA                 (N28W080)
BOU = Boulder CO                 USA                 (N40W105)
ANC = Anchorage AK               USA                 (N61W150)


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.


