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From: oler@rho.uleth.ca (Cary Oler)
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Subject: Daily Summary of Ionospheric Data for 06 May
To: solar-daily@lut.fi
Date: Thu, 6 May 93 22:48:17 MDT
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                    ---------------------------------------
                    DAILY IONOSPHERIC SUMMARY FOR 06 MAY 93
                    ---------------------------------------


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

     MUR  ASH  SAL  TOM  DIX  KHA  MAG  UPS
     ---  ---  ---  ---  ---  ---  ---  ---
00Z: 2.8  2.8  3.0       2.9  2.6       2.8
01Z:      2.6  3.0  3.0       2.6       2.7
02Z: 2.8  3.0       3.0       2.8  2.7  2.8
03Z: 2.8  3.3       2.8       2.9  2.9
04Z: 2.9  3.0       2.9       2.9  2.8  2.8
05Z: 2.9  2.8       2.8  2.6       3.2  3.0
06Z: 2.9  2.8  3.0  2.9  2.6  3.1  3.0
07Z: 3.1  2.6  3.4  3.0       2.9
08Z: 3.1  2.7  3.3            2.7
09Z: 3.1  2.7  3.0       2.8  3.1
10Z: 3.1  2.8  3.0       2.9  3.0
11Z: 3.1  2.9  3.2  3.0  2.9
12Z:
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  3.0       1.2  1.2  1.0
01Z:      2.0  1.5  1.0  1.0  1.2  1.0
02Z: 1.0  2.0       1.2  1.0  1.1  1.0
03Z: 3.0  2.0       1.0  1.8  1.1  1.0
04Z: 2.0  2.0       1.2       1.2  1.0
05Z: 1.2  2.0  3.4  1.0  4.0       1.0
06Z: 1.0  2.0  1.0  1.2  2.7  1.2  1.0
07Z: 1.2  2.0  1.0  1.2  3.0  1.1
08Z: 1.2  2.0  1.0       1.5  1.0
09Z: 1.0  2.0  1.0       1.2  1.2
10Z: 1.0  2.0  1.0       1.2  1.4
11Z: 1.0  2.0  1.0  1.0  1.0
12Z:
13Z:
14Z:
15Z:
16Z:
17Z:
18Z:
19Z:
20Z:
21Z:
22Z:
23Z:


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

     ASH  TOM  DIX  KHA  MAG
     ---  ---  ---  ---  ---
00Z:                     3.3
01Z: 2.7  2.9       3.9
02Z: 2.6  3.3       3.9
03Z: 4.0  3.4       3.8  3.4
04Z: 4.7  3.5       3.9  4.2
05Z: 4.0  3.5            3.7
06Z: 3.7       3.5       3.1
07Z:
08Z: 3.4            3.0
09Z:
10Z:                2.9
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:  5.2  5.1  5.5       5.0  6.2  4.8  3.9
01Z:       5.9  6.0  6.9  5.0  6.1  5.0  3.5
02Z:  4.5  7.0       7.2  5.2  6.5  5.3  3.5
03Z:  4.8  8.5       7.6  5.4  6.8  5.5
04Z:  5.2  9.1       7.8       7.4  5.4  5.6
05Z:  5.9  9.4  6.0  8.5  5.4       5.8  6.7
06Z:  6.4  9.6  6.8  8.5  5.7  6.9  5.9
07Z:  6.5 10.0  7.0  8.3  5.5  7.1
08Z:  6.9 10.4  7.0       5.3  6.7
09Z:  6.7 10.4  6.6       5.6  6.3
10Z:  7.1  9.8  6.8       5.5  6.4
11Z:  6.8  9.4  6.7  7.2  5.5
12Z:
13Z:
14Z:                                          5.3
15Z:                                          5.4
16Z:
17Z:
18Z:                                          6.2
19Z:
20Z:
21Z:
22Z:
23Z:


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

      MUR  ASH  SAL  TOM  DIX  KHA  MAG  UPS
     ---- ---- ---- ---- ---- ---- ---- ----
00Z: 14.6 14.3 16.5      14.5 16.1      10.7
01Z:      15.3 18.0 20.7      15.9       9.3
02Z: 12.6 21.0      21.6      18.2 14.3 10.0
03Z: 13.4 28.0      21.3      19.7 16.0
04Z: 15.1 27.3      22.6      21.5 15.1 15.7
05Z: 17.1 26.3      23.8 14.0      18.6 19.8
06Z: 18.6 26.9 20.4 24.7 14.8 21.4 17.7
07Z: 20.1 26.0 23.8 24.9      20.6
08Z: 21.4 28.1 23.1           18.1
09Z: 20.8 28.1 19.8      15.7 19.5
10Z: 22.0 27.4 20.4      16.0 19.2
11Z: 21.1 27.3 21.4 21.6 16.0
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:  540  140       210       260
01Z:  550   68       300  250  250  100
02Z:  560   69       390  200        59
03Z:  490   66       450  170  220   53
04Z:  430   66            160  200   50
05Z:  370  150                 180   42
06Z:  270  150                 170   40
07Z:  200                      170   32
08Z:  150                      170   32
09Z:  140                      170
10Z:  130                      170
11Z:  140                      180
12Z:  130                      170
13Z:  120  130                 210
14Z:   57  180                 260
15Z:   37  120            300  300   53
16Z:   54  120            330  330   83
17Z:  130  110            380  370  100
18Z:  200  150            420  380
19Z:  260  190            430  410
20Z:       190            420  410
21Z:       180            370  360   97
22Z:                      300  320   84
23Z:                      290  290   58


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.


