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From: oler@rho.uleth.ca (Cary Oler)
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Subject: Daily Summary of Ionospheric Data for 10 May
To: solar-daily@lut.fi
Date: Tue, 11 May 93 10:05:58 MDT
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                    ---------------------------------------
                    DAILY IONOSPHERIC SUMMARY FOR 10 MAY 93
                    ---------------------------------------


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

     ASH  TOM  DIX  KHA  MAG  UPS
     ---  ---  ---  ---  ---  ---
00Z: 2.8                      2.3
01Z: 2.6                      2.5
02Z: 2.9            2.6       2.7
03Z: 3.3                 2.6  2.5
04Z: 3.1       3.1       2.7
05Z: 3.0            3.0  2.8
06Z: 2.7  2.8       2.8
07Z: 2.6  2.8       2.7  2.8
08Z: 2.6  2.8       2.5  2.8
09Z: 2.7  2.9       3.0  3.0
10Z: 2.7  3.0  3.6  2.9  2.9
11Z: 2.8  3.0  3.6  3.1  2.8
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:      2.0                 1.2
01Z:      2.0       1.0
02Z:      2.0       1.2       1.4  1.0
03Z:      2.0       1.0            1.0
04Z:      2.0       1.0  1.2       1.0
05Z:      2.0       1.7  1.2  1.2  1.1
06Z:      2.0       1.8  1.2  1.4
07Z:      2.0       1.6       1.2  1.0
08Z:      2.0       1.1  1.2  1.2  1.0
09Z: 2.0  2.0       1.9  1.4  1.2  1.0
10Z:      2.0       1.6  1.2  1.4  1.0
11Z: 2.5  2.0  1.8  1.8  1.3  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  SAL  TOM  DIX  KHA  MAG
     ---  ---  ---  ---  ---  ---  ---
00Z:                          2.4
01Z:                2.6
02Z:      2.3                 3.2  3.0
03Z:      3.4                      3.3
04Z:      3.7                      3.7
05Z:      3.7            3.1       3.2
06Z:      5.7            3.2
07Z:      4.0                 2.8  2.7
08Z:      4.3            3.2  3.4
09Z:      4.1            3.1  2.3  2.4
10Z:                3.8       2.5
11Z: 4.5       5.0
12Z:
13Z:
14Z:
15Z:
16Z:
17Z:
18Z:
19Z:
20Z:
21Z:
22Z:
23Z:


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

      MUR  ASH  TOM  DIX  KHA  MAG  UPS  POI
     ---- ---- ---- ---- ---- ---- ---- ----
00Z:       3.8                      3.5  3.9
01Z:       4.0                      3.4  3.9
02Z:       5.6            6.2  4.8  3.1  3.6
03Z:       7.0                 5.2  3.2  2.9
04Z:       6.6       3.6       5.6  3.2  2.5
05Z:       7.3            6.2  6.1  3.6  3.5
06Z:       6.9  6.2       6.8            4.0
07Z:       9.2  6.7       7.2  5.9       4.1
08Z:       9.8  6.9       8.0  4.9
09Z:  4.5 10.2  6.8       7.3  4.6
10Z:       9.7  6.2  3.9  8.0  3.6
11Z:      10.0  6.7  3.9  8.2  2.6
12Z:
13Z:
14Z:
15Z:
16Z:
17Z:
18Z:
19Z:
20Z:
21Z:
22Z:
23Z:


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

      ASH  TOM  DIX  KHA  MAG  UPS
     ---- ---- ---- ---- ---- ----
00Z: 10.6                      8.2
01Z: 10.4                      8.5
02Z: 16.2           16.1       8.4
03Z: 23.1                13.5  7.8
04Z: 20.5      11.2      15.1
05Z: 21.9           18.6 17.1
06Z: 18.6 17.4      19.0
07Z: 23.9 18.8      19.4 16.5
08Z: 25.5 19.3      20.0 13.7
09Z: 27.5 19.7      21.9 13.8
10Z: 26.2 18.6 14.0 23.2 10.4
11Z: 28.0 20.1 14.0 25.4  7.3
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:  400  230       270  350  290   96
01Z:  430  320       310  310  250   64
02Z:  400  240       370  230  230   61
03Z:  340  330       520  220  200   34
04Z:  310  250       600  230  160 .67
05Z:  270  250       690  240        34
06Z:  220  340       940  220  170   41
07Z:  200  340      1100  200  170   32
08Z:  180  330       980  170  170   45
09Z:  210  330       950  150  160   39
10Z:  220  240       790  130  150   39
11Z:  180  250       520  140  130   47
12Z:  160  200       440  140  150   36
13Z:  180  190       360  160  170   38
14Z:  180  180            170  200   47
15Z:  240  180       240  170  210   68
16Z:  250  170       240  180  210  110
17Z:  230  230       210  180  210  140
18Z:  300  240       130  180  210  160
19Z:  480  300       100  180  220  160
20Z:  460  190       110  180  220  150
21Z:  480  200       160  180  220  150
22Z:  470            190  180  220  130
23Z:                      180  210  120


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)
POI = Poitiers                   France              (N46E000)
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.


