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From: oler@rho.uleth.ca (Cary Oler)
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Subject: Daily Summary of Ionospheric Data for 24 May
To: solar-daily@lut.fi
Date: Mon, 24 May 93 21:18:32 MDT
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                    ---------------------------------------
                    DAILY IONOSPHERIC SUMMARY FOR 24 MAY 93
                    ---------------------------------------


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

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


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

     MUR  SAL  DIX  MAG  ASH  KHA  TOM
     ---  ---  ---  ---  ---  ---  ---
00Z: 1.0  1.0  1.0  1.0
01Z: 1.0  1.0  1.0            1.1
02Z:      1.0  1.0
03Z:
04Z: 1.4  1.0  1.0            1.3
05Z: 1.0  1.0  1.0  1.0  2.0  1.3
06Z: 1.0  1.0  1.0  1.0       1.3  1.3
07Z: 1.0  1.0  1.0  1.0       1.4
08Z:      1.0  1.2  1.0  2.0  1.1  1.2
09Z:      1.0  1.7  1.0  2.0       1.5
10Z: 2.0  1.0  3.3  1.0  2.0       1.0
11Z: 2.2  1.0  1.8  1.0  2.0       1.0
12Z: 1.3  1.0  1.2  1.0  2.0       1.0
13Z:
14Z:
15Z:
16Z:
17Z:
18Z:
19Z:
20Z:
21Z:
22Z:
23Z:


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

     MUR  SAL  DIX  MAG  ASH  KHA  TOM
     ---  ---  ---  ---  ---  ---  ---
00Z: 5.0  3.3       3.4
01Z: 7.0                      4.0
02Z:           4.2
03Z:
04Z:           4.2
05Z:           3.2       4.1
06Z:      4.0  3.3                 3.9
07Z:      4.1  3.3  3.0       3.7
08Z:      4.0  4.2  2.5  6.0  3.4
09Z:      4.0       2.5  5.8       3.2
10Z: 4.2  3.0       2.0  5.2       3.1
11Z: 4.1       3.4       7.8       3.1
12Z:                     4.0       3.1
13Z:
14Z:
15Z:
16Z:
17Z:
18Z:
19Z:
20Z:
21Z:
22Z:
23Z:


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

      MUR  SAL  DIX  MAG  ASH  KHA  UPS  POI  TOM  CAM
     ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
00Z:       4.9  5.0  5.5            5.0  5.5       7.6
01Z:       5.0  5.0            6.3  4.9  5.3       8.3
02Z:       5.4  5.0                 4.9  5.3       6.8
03Z:                                5.0  5.1       6.6
04Z:  5.1  6.0  5.2            6.3  4.9  4.8       7.8
05Z:  5.2  6.0  5.4  5.4  8.0  6.3  5.1  5.7       7.7
06Z:  5.3  6.2  5.6  5.4       6.4       5.8  6.8  6.6
07Z:  6.0  6.2  6.0  5.4       6.3       5.8       6.2
08Z:       6.6  6.0  5.5  9.4  6.3            6.8  5.5
09Z:       6.2  6.0  6.0  9.6                 6.8  4.5
10Z:       6.2  5.9  6.7  9.5                 6.7  4.0
11Z:  6.0  6.0  5.8  7.1  9.9                 6.5  3.4
12Z:  5.8  6.0  6.0  7.1  8.4                 6.3  4.0
13Z:                                               3.9
14Z:                                               3.8
15Z:                                               3.8
16Z:                                               4.0
17Z:                                               4.1
18Z:                                               4.5
19Z:                                               4.4
20Z:                                               2.9
21Z:                                               4.3
22Z:                                               6.4
23Z:                                               6.7


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

      MUR  SAL  DIX  MAG  ASH  KHA  UPS  TOM
     ---- ---- ---- ---- ---- ---- ---- ----
00Z:      14.2 14.0
01Z:      14.0 13.0           19.5
02Z:      16.2                     14.0
03Z:                               15.2
04Z: 14.8 18.0                21.4 13.7
05Z: 14.0 18.6      15.1 20.8 18.9 14.5
06Z:      18.6 15.7 15.7      19.8      20.4
07Z: 17.4 19.2 16.8 15.7      18.9
08Z:      21.1 16.8 16.5 25.4 19.5      20.4
09Z:      19.8 16.8 18.0 27.8           20.4
10Z:      19.2 17.1 20.1 26.6           20.8
11Z: 18.6 18.6 16.8 22.7 28.7           20.1
12Z: 16.2 18.0 17.4 22.7 25.2           20.2
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  150       240  300  130  290
01Z:  430            310  290       280
02Z:  470            370  220  130  280
03Z:  490            500  170  120  270
04Z:  500            570  150   77  260
05Z:  480            600  150   39  260
06Z:  370            650  150   31  270
07Z:  270            670  140   30  270
08Z:  240            620  150   31  270
09Z:  210            580  130   32  260
10Z:  190            490  120   31  250
11Z:  210            330  140   31  240
12Z:  190  130       260  170   37  240
13Z:  150  110       200  210   76  240
14Z:  110   71       180       120  250
15Z:  120   77       160       150  270
16Z:  130   73       170       160  310
17Z:  180  110       160       170  340
18Z:  240  120       160  300  170  360
19Z:  260  120       100  300  170  360
20Z:  290             61  290  170  350
21Z:  320  130        86  290  170  330
22Z:  340   67       140  290  160  320
23Z:  380   57       150  320  150  310


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

MUR = Murmansk                   USSR                (N68E033)
SAL = Salekhard                  USSR                (N66E066)
DIX = Dixon                      USSR                (N74E081)
MAG = Magadan                    USSR                (N60E151)
ASH = Ashkhabad                  USSR                (N37E058)
KHA = Khabarovsk                 USSR                (N48E135)
UPS = Uppsala                    Sweden              (N60E018)
POI = Poitiers                   France              (N46E000)
TOM = Tomsk                      USSR                (N56E085)
CAM = Camden                     Australia           (S34E151)
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.


