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From: oler@rho.uleth.ca (Cary Oler)
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Subject: Daily Summary of Ionospheric Data for 05 May
To: solar-daily@lut.fi
Date: Thu, 6 May 93 1:16:17 MDT
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                    ---------------------------------------
                    DAILY IONOSPHERIC SUMMARY FOR 05 MAY 93
                    ---------------------------------------


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

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


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

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


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

     MUR  ASH  TOM  DIX  KHA  MAG
     ---  ---  ---  ---  ---  ---
00Z:                     3.0
01Z:      2.4  3.5       3.3  3.4
02Z:      2.5  3.2  3.0  3.5  3.5
03Z: 2.5  3.4  3.5  3.0  3.3  3.7
04Z:      3.8  3.5  5.2  3.4  3.4
05Z:      4.1  3.6       3.8  3.2
06Z:      4.0  4.0            3.0
07Z:      4.0  4.0
08Z:      3.9  3.8
09Z:                     2.8
10Z:
11Z:
12Z:
13Z:
14Z:
15Z:
16Z:
17Z:
18Z:
19Z:
20Z:
21Z:
22Z:
23Z:


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

      MUR  ASH  SAL  TOM  DIX  KHA  MAG  UPS  OTI
     ---- ---- ---- ---- ---- ---- ---- ---- ----
00Z:  4.3  5.4  4.5  5.8  4.8  7.0  5.7  4.9
01Z:  4.3  5.6       6.5  5.0  6.8  6.1  4.1
02Z:  4.4  7.3  5.0  7.0  5.0  7.5  6.1  3.5
03Z:  4.6  8.6  5.6  7.4  5.4  7.9  6.0  3.8
04Z:  5.0  8.2  5.8  7.8  6.0  7.3  6.4  4.7
05Z:  5.2  8.0  6.4  8.5  6.0  7.5  6.4  5.0
06Z:  5.6  9.1  6.5  8.2            6.6
07Z:  6.3  9.9  7.0  8.0  6.2  7.0  6.6
08Z:  6.2 10.3  7.5  7.7       7.2
09Z:  6.5       7.8  7.7  6.0  8.0
10Z:       9.5  7.2  7.9
11Z:
12Z:       9.0  6.5  7.0            7.3       5.8
13Z:                                          5.6
14Z:                                          6.1
15Z:
16Z:
17Z:                                          6.4
18Z:                                          6.4
19Z:
20Z:
21Z:
22Z:
23Z:


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

      MUR  ASH  SAL  TOM  DIX  KHA  MAG  UPS
     ---- ---- ---- ---- ---- ---- ---- ----
00Z: 13.3 14.6 12.6 18.6 13.4 21.7 16.5 12.5
01Z: 13.3 15.7      19.5 14.0 21.1 19.5 11.3
02Z: 12.3 19.7 14.5 21.7      23.2 18.3 10.0
03Z: 12.9 25.8 15.1 22.2 15.1 21.3 18.0
04Z: 14.0 23.8 16.8 22.6 17.4 19.0 19.2
05Z: 14.0 22.4 19.2 25.5 16.8 22.5 19.8
06Z: 16.2 23.7 19.5 24.6           21.1
07Z: 17.6 25.7 21.0 24.8 18.0 20.3 21.1
08Z: 19.2 27.8 22.5 23.1      20.9
09Z: 18.9      21.8 23.9 16.8 25.6
10Z:      26.6 20.9 25.3
11Z:
12Z:      26.1 19.5 21.7           21.9
13Z:
14Z:
15Z:
16Z:
17Z:
18Z:
19Z:
20Z:
21Z:
22Z:
23Z:


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

      PAL  SHE  OSA  TAO  CNV  BOU  ANC
     ---- ---- ---- ---- ---- ---- ----
00Z:  480            240       280  110
01Z:  520            310  300  270   94
02Z:  550            370  250  250   77
03Z:  490            430  180        73
04Z:  380            490  170  210   72
05Z:  310            540  160  180   72
06Z:  230            600  160  170   71
07Z:  160   39       590  160  160   75
08Z:  120   59       580  160  160   67
09Z:  110            590  160  170   44
10Z:  100   45       560       170   34
11Z:   93   54       460  170  170   32
12Z:   94   43       490  210  170   26
13Z:   84   43       660  270  210   22
14Z:   66   43       660  290  250   32
15Z:   62   43            320  290   59
16Z:   79   43            340  310   98
17Z:  140                 360  320  110
18Z:  210   80            380  310
19Z:  280  120       150  340
20Z:  340  120       100  320  340
21Z:  390  130       110  310  340
22Z:  450  110       160  290  310
23Z:  510  130       170  270  290


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

MUR = Murmansk                   USSR                (N68E033)
ASH = Ashkhabad                  USSR                (N37E058)
SAL = Salekhard                  USSR                (N66E066)
TOM = Tomsk                      USSR                (N56E085)
DIX = Dixon                      USSR                (N74E081)
KHA = Khabarovsk                 USSR                (N48E135)
MAG = Magadan                    USSR                (N60E151)
UPS = Uppsala                    Sweden              (N60E018)
OTI = Ottawa                     Canada              (N45W076)
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.


