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From: oler@rho.uleth.ca (Cary Oler)
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Subject: Daily Summary of Ionospheric Data for 22 May
To: solar-daily@lut.fi
Date: 	Sun, 23 May 1993 08:34:15 +0300
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                    ---------------------------------------
                    DAILY IONOSPHERIC SUMMARY FOR 22 MAY 93
                    ---------------------------------------


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

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


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

     ASH  SAL  TOM  DIX  MAG  KHA
     ---  ---  ---  ---  ---  ---
00Z: 2.0  1.0  1.0  1.0  1.0
01Z:
02Z: 2.0  1.0       1.2       1.0
03Z: 2.0  1.0       1.2  1.0
04Z: 2.0  3.0       1.2  1.0
05Z: 2.0  4.0       3.1       1.3
06Z:      1.0       1.8  1.0  1.2
07Z:                1.5  1.0  1.1
08Z:      1.0       2.5  1.0  1.2
09Z:
10Z:      1.0       1.2       1.1
11Z:      1.0       1.1  1.0
12Z:
13Z:
14Z:
15Z:
16Z:
17Z:
18Z:
19Z:
20Z:
21Z:
22Z:
23Z:


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

     ASH  DIX  MAG  KHA
     ---  ---  ---  ---
00Z:      2.8  3.3
01Z:
02Z:                2.4
03Z: 3.3       3.5
04Z: 3.5       3.4
05Z: 4.3            3.8
06Z:      3.8  3.1  4.0
07Z:      3.3       2.7
08Z:      3.2  2.7  3.4
09Z:
10Z:                3.0
11Z:           1.4
12Z:
13Z:
14Z:
15Z:
16Z:
17Z:
18Z:
19Z:
20Z:
21Z:
22Z:
23Z:


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

      ASH  SAL  TOM  DIX  MAG  KHA
     ---- ---- ---- ---- ---- ----
00Z:  5.9  4.9  6.0  5.0  5.4
01Z:
02Z:  6.0  5.4       5.2       6.4
03Z:  7.1  5.8       5.5  5.1
04Z:  8.1  6.0       6.0  5.2
05Z:  9.0  6.0       6.0       6.0
06Z:       6.5       6.0  5.4  5.9
07Z:                 6.0  5.4  6.2
08Z:       6.6       6.0  5.7  6.8
09Z:
10Z:       6.0       6.0       7.1
11Z:       6.1       6.0  7.1
12Z:
13Z:
14Z:
15Z:
16Z:
17Z:
18Z:
19Z:
20Z:
21Z:
22Z:
23Z:


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

      ASH  SAL  TOM  DIX  MAG  KHA
     ---- ---- ---- ---- ---- ----
00Z: 17.1 14.2 18.6 14.5 16.2
01Z:
02Z: 16.2 15.7                16.6
03Z: 21.3 17.4      15.4 15.3
04Z: 21.1 18.6           15.1
05Z: 26.1 18.6      16.8      15.6
06Z:      19.5      17.4 16.2 15.9
07Z:                16.8 16.2 18.0
08Z:      19.8      16.8 18.2 18.4
09Z:
10Z:      18.6      17.4      22.0
11Z:      18.9      17.4 21.3
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:                 160
01Z:  500  150       220  270
02Z:  470  150       280  210       280
03Z:  430  150       350  160       270
04Z:  360  160       420  140       260
05Z:  350  160       470  130       270
06Z:  300  160       510  130       270
07Z:  230  160       460  130       270
08Z:  160  190       400  120       260
09Z:  140  180       350            250
10Z:  120            320  110       230
11Z:  110  180       300  120       230
12Z:   94  100       290  150       220
13Z:   80   99       210  200       230
14Z:   69  100       130  240       230
15Z:   49  120       120  250       250
16Z:   69  110       160  250       290
17Z:  130  150       160  250       320
18Z:  160  190       120  250       340
19Z:  190  180        76            350
20Z:  250  190                      350
21Z:  310  200            290       350
22Z:                      300       330
23Z:  410                 310       320


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

ASH = Ashkhabad                  USSR                (N37E058)
SAL = Salekhard                  USSR                (N66E066)
TOM = Tomsk                      USSR                (N56E085)
DIX = Dixon                      USSR                (N74E081)
MAG = Magadan                    USSR                (N60E151)
KHA = Khabarovsk                 USSR                (N48E135)
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.


