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From: oler@rho.uleth.ca (Cary Oler)
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Subject: Daily Summary of Ionospheric Data for 07 May
To: solar-daily@lut.fi
Date: Fri, 7 May 93 22:31:14 MDT
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                    ---------------------------------------
                    DAILY IONOSPHERIC SUMMARY FOR 07 MAY 93
                    ---------------------------------------


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

     UPS  ASH  DIX  KHA  MUR  SAL  TOM  MAG
     ---  ---  ---  ---  ---  ---  ---  ---
00Z: 2.7
01Z: 2.5            2.9  2.8  2.5  2.8
02Z:
03Z:      3.0  2.3  2.8  2.8       3.1
04Z: 3.0  3.0  2.4                 3.0  2.9
05Z:      2.8  2.6            2.7  3.0  3.0
06Z:      2.9  2.8  3.0       2.9  3.1  3.0
07Z:           2.8
08Z:      2.9  2.8  3.2  2.6  3.0  3.1  3.2
09Z:      2.8  2.7  3.1  2.6  3.0  3.1
10Z:      2.9  2.7  3.0  2.6  2.9  3.2
11Z:      2.8  2.9  3.0  2.8  2.9  3.1
12Z:
13Z:
14Z:
15Z:
16Z:
17Z:
18Z:
19Z:
20Z:
21Z:
22Z:
23Z:


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

     ASH  DIX  KHA  MUR  SAL  TOM  MAG
     ---  ---  ---  ---  ---  ---  ---
00Z:
01Z:      1.5  1.4  1.0  1.0  1.0
02Z:
03Z: 2.0  3.0  1.4  1.0       1.0  1.0
04Z: 2.0  3.0                 1.0  1.0
05Z: 2.0  4.5            1.0  1.4  1.0
06Z: 2.0  3.8  1.2       1.0  1.0  1.0
07Z:      3.1
08Z: 2.0  3.2  1.0  1.1  1.0  1.0  1.0
09Z: 2.0  1.2  1.0  1.0  1.0  1.0
10Z: 2.0  1.2  1.2  1.0  1.0  1.0
11Z: 2.0  1.4  1.1  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  DIX  KHA  MUR  SAL  TOM  MAG
     ---  ---  ---  ---  ---  ---  ---
00Z:
01Z:      5.0  5.0  3.1  3.0  2.8
02Z:
03Z: 3.0       3.8            3.3  3.4
04Z: 4.6                      3.5  3.2
05Z: 3.8                      4.6  3.2
06Z: 3.9                 3.4  3.6  3.4
07Z:
08Z: 3.6       3.2       3.6  3.6  2.1
09Z: 3.7       2.8
10Z: 3.6  3.2  2.8
11Z:      3.8
12Z:
13Z:
14Z:
15Z:
16Z:
17Z:
18Z:
19Z:
20Z:
21Z:
22Z:
23Z:


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

      UPS  ASH  DIX  KHA  MUR  SAL  TOM  MAG  OTI
     ---- ---- ---- ---- ---- ---- ---- ---- ----
00Z:  3.5
01Z:  3.5            5.6  4.4  4.6  5.3
02Z:
03Z:       8.6  4.8  6.4  4.6       6.5  5.3
04Z:  4.1  8.4  5.1                 6.4  5.5
05Z:  4.7  8.2  5.6            5.3  6.9  5.5
06Z:       9.0  6.0  7.4       6.0  7.2  5.8
07Z:            6.0
08Z:       9.8  5.3  7.1  5.2  6.1  7.2  5.7
09Z:       9.8  5.3  6.6  5.3  6.0  7.2
10Z:       9.2  5.7  6.6  5.4  6.1  6.6
11Z:       8.8  6.0  7.4  5.6  6.0  6.9
12Z:                                          4.9
13Z:                                          5.2
14Z:
15Z:
16Z:
17Z:
18Z:
19Z:
20Z:
21Z:
22Z:
23Z:


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

      UPS  ASH  DIX  KHA  MUR  SAL  TOM  MAG
     ---- ---- ---- ---- ---- ---- ---- ----
00Z:  9.3
01Z:  8.9           16.2 12.3 11.5 14.8
02Z:
03Z:      25.8 11.0 17.9 12.9      20.1
04Z: 12.1 25.2 12.2                19.2 16.0
05Z:      23.0 14.6           14.3 20.7 16.5
06Z:      26.1 16.8 22.2      17.4 22.3 17.4
07Z:           16.8
08Z:      28.4 14.8 22.7 13.5 18.3 22.3 18.2
09Z:      27.4 14.3 20.5 13.8 18.0 22.3
10Z:      26.7 15.4 19.8 14.0 17.7 21.1
11Z:      24.6 17.4 22.2 15.7 17.4 21.4
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:  460            320  290  250   40
01Z:  410            420  250  230   29
02Z:  380  240            220  210   17
03Z:  370  160            180  200   10
04Z:  360  240            170  180   10
05Z:  330  250            170  160   10
06Z:  260  250            160  160  5.6
07Z:  200  160            170  160   35
08Z:  160  120            160  160   22
09Z:  140  190            160  160   31
10Z:  120  100            150  170   10
11Z:  120  110       500  150  160   38
12Z:  110  130       340  180  170   39
13Z:  100  120       280  210  200   44
14Z:   92  120       270  200  240   53
15Z:   71  120       270       240   81
16Z:   82            240  240  260  120
17Z:  150  120       180  270  280  170
18Z:  250  100       180  330  310  210
19Z:  300  190       110  400  320  210
20Z:  310  200       120  390  330  210
21Z:  320  200        93  390       190
22Z:  380                 380  290  200
23Z:  420            140  310  280  180


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

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


