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From: oler@rho.uleth.ca (Cary Oler)
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Subject: Daily Summary of Ionospheric Data for 11 May
To: solar-daily@lut.fi
Date: Wed, 12 May 93 0:17:04 MDT
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                    ---------------------------------------
                    DAILY IONOSPHERIC SUMMARY FOR 11 MAY 93
                    ---------------------------------------


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

     MUR  TOM  DIX  KHA  ASH  SAL  MAG  UPS
     ---  ---  ---  ---  ---  ---  ---  ---
00Z:      2.8       3.1  2.6  2.9       2.5
01Z: 2.9  2.4       2.9  2.7  2.9       2.8
02Z: 2.7       3.3       3.0  2.8  3.0  3.0
03Z: 2.7       3.3       3.0  2.6       2.8
04Z: 2.6            3.0  3.0  2.4  3.0  2.8
05Z:      3.0       3.2  2.9  2.6  3.2  2.7
06Z:      3.1  3.1  2.8  2.7  2.5  3.2
07Z:      3.1            2.7  2.7  3.1
08Z:      2.8       3.1  2.8  2.5  3.1
09Z:      3.0       3.1  2.9  2.7
10Z:      3.1       3.2  2.8  2.9
11Z:      3.0            2.9  2.8
12Z:                          3.0
13Z:
14Z:
15Z:
16Z:
17Z:
18Z:
19Z:
20Z:
21Z:
22Z:
23Z:


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

     MUR  TOM  DIX  KHA  ASH  SAL  MAG
     ---  ---  ---  ---  ---  ---  ---
00Z: 1.0  1.0  1.8  1.5  2.0  1.0
01Z: 1.0  1.0  1.7  1.6  2.0  1.5  1.0
02Z: 1.0  1.0  1.2  1.5  2.0  1.5  1.0
03Z: 1.0       2.9  1.5  2.0  1.0  1.0
04Z: 1.0  1.0       1.2  2.0  1.0  1.0
05Z: 1.0  1.2       1.5  2.0  1.0  1.0
06Z: 1.0  1.1  2.9  1.5  2.0  1.0  1.0
07Z: 1.0  1.0  3.1       2.0  1.0  1.0
08Z:      1.0  3.0  1.1  2.0  1.0  1.1
09Z: 1.0  1.0  1.8  1.3  2.0  1.0
10Z: 1.0  1.3  1.2  1.5  2.0  1.0
11Z: 1.0  1.0  1.2       2.0  1.0
12Z:           1.2            1.0
13Z:
14Z:
15Z:
16Z:
17Z:
18Z:
19Z:
20Z:
21Z:
22Z:
23Z:


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

     MUR  TOM  DIX  KHA  ASH  MAG
     ---  ---  ---  ---  ---  ---
00Z: 4.0  4.0  4.2  4.7
01Z: 3.2  2.7  3.8  5.0       3.6
02Z:      3.0       6.0  2.3  3.8
03Z:                8.0  3.1  3.6
04Z:      5.3       5.1  4.2  3.6
05Z:      3.6       3.1  4.2  3.1
06Z:      6.6            3.9  3.2
07Z:      3.7            4.3  5.9
08Z:                3.1  4.0  3.2
09Z:                3.0  4.4
10Z:      3.6       3.1
11Z:      3.1            3.7
12Z:
13Z:
14Z:
15Z:
16Z:
17Z:
18Z:
19Z:
20Z:
21Z:
22Z:
23Z:


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

      MUR  TOM  DIX  KHA  ASH  SAL  MAG  POI  UPS
     ---- ---- ---- ---- ---- ---- ---- ---- ----
00Z:       4.2       6.0  5.2  4.6       4.8  2.0
01Z:  4.3  4.4       6.2  5.4  4.6  4.9  4.8  2.1
02Z:  4.3       4.0  6.2  6.6  4.6  5.3  4.4  2.8
03Z:  4.4       4.0       7.4  4.6  5.5  4.0  3.5
04Z:  4.7            7.0  8.0  4.5  5.7  3.9  4.1
05Z:  4.8  5.9       7.5  6.5  4.6  6.1  4.3  4.2
06Z:  4.9  6.2  4.8  6.7  7.3  4.8  6.4  5.1
07Z:  5.0  6.3  4.8       8.4  4.8  6.4  5.1
08Z:       6.5  5.0  6.9  9.8  6.0  6.4
09Z:  4.9  6.8  5.0  6.8  9.1  5.3
10Z:  5.0  6.8  5.0  7.0  8.7  5.3
11Z:  5.2  6.6  5.0       8.7  5.3
12Z:            5.2            5.6
13Z:
14Z:
15Z:
16Z:
17Z:
18Z:
19Z:
20Z:
21Z:
22Z:
23Z:


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

      MUR  TOM  DIX  KHA  ASH  SAL  MAG  UPS
     ---- ---- ---- ---- ---- ---- ---- ----
00Z:      11.8      18.6 13.5 13.3       5.1
01Z: 12.5 10.6      18.0 14.6 13.3       5.8
02Z: 11.6      13.2      19.8 12.9 15.9  8.3
03Z: 11.9      13.2      22.2 12.0      10.0
04Z: 12.2           21.0 24.0 10.8 17.1 11.7
05Z:      17.7      24.0 18.9 12.0 19.5 11.1
06Z:      19.2 14.9 18.8 19.7 12.0 20.5
07Z:      19.5           22.7 13.0 19.8
08Z:      18.2      21.4 27.4 15.0 19.8
09Z:      20.4      21.1 26.4 14.3
10Z:      21.1      22.4 24.4 15.4
11Z:      19.8           25.2 14.8
12Z:                          16.8
13Z:
14Z:
15Z:
16Z:
17Z:
18Z:
19Z:
20Z:
21Z:
22Z:
23Z:


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

      PAL  SHE  OSA  TAO  CNV  BOU  ANC
     ---- ---- ---- ---- ---- ---- ----
00Z:  270  180       260  160  200  110
01Z:  270  100       290  140  190  110
02Z:  260            380  130  170   96
03Z:  260  110       450  110  160   91
04Z:  280  110       520  110  150   89
05Z:  300  110       620  110  140   87
06Z:  270  200       710  110  130   92
07Z:  220  200       710  110  130   84
08Z:  160  200       730   96  130   79
09Z:  130  190       740   90  120   63
10Z:  120   66       640   80  120   52
11Z:  110   99       540   95  120   40
12Z:   90   58       380  130  130   36
13Z:   80   59       260  170        32
14Z:   74   62       230  210  220   43
15Z:   72   69       260  250  260   59
16Z:   80   80       320  300  280   98
17Z:  110   56       280  330  290  140
18Z:  150   89       260  380  320  180
19Z:  190  150       220  400  320  190
20Z:  240  140       220  390  300  170
21Z:  300  160       170  330       170
22Z:  360  160       170  290  290  170
23Z:  440            190  280  280  160


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

MUR = Murmansk                   USSR                (N68E033)
TOM = Tomsk                      USSR                (N56E085)
DIX = Dixon                      USSR                (N74E081)
KHA = Khabarovsk                 USSR                (N48E135)
ASH = Ashkhabad                  USSR                (N37E058)
SAL = Salekhard                  USSR                (N66E066)
MAG = Magadan                    USSR                (N60E151)
POI = Poitiers                   France              (N46E000)
UPS = Uppsala                    Sweden              (N60E018)
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.


