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From: oler@rho.uleth.ca (Cary Oler)
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Subject: Daily Summary of Ionospheric Data for 17 October
To: solar-daily@lut.fi
Date: Mon, 18 Oct 93 10:20:52 MDT
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                    ---------------------------------------
                    DAILY IONOSPHERIC SUMMARY FOR 17 OCT 93
                    ---------------------------------------


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

     MUR  SVE  SAL  TOM  DIX  MAG
     ---  ---  ---  ---  ---  ---
00Z:
01Z:      2.8       3.2       3.6
02Z:      2.9  3.1  3.3       3.4
03Z:      2.8  3.0  3.3       3.5
04Z:      3.0  3.1  3.3       3.5
05Z: 3.1  3.1  3.1  3.3       3.5
06Z: 3.3       3.2            3.5
07Z: 3.2       3.3            3.5
08Z: 3.4       3.3
09Z: 3.4       3.4       3.3
10Z: 3.3
11Z: 3.3
12Z:
13Z:
14Z:
15Z:
16Z:
17Z:
18Z:
19Z:
20Z:
21Z:
22Z:
23Z:
=========================================
Estimated Average Global M(3000)F2:  3.25.


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

     MUR  SVE  SAL  TOM  DIX  MAG
     ---  ---  ---  ---  ---  ---
00Z:
01Z: 1.0  1.8       1.0  1.0  1.3
02Z: 1.0  1.8  1.0  1.2  1.0  1.0
03Z:      1.4  1.0  1.5       1.3
04Z:      1.6  2.0  1.8       1.0
05Z: 1.8  1.4  1.9  2.0       1.0
06Z: 1.8       2.3       4.2  1.0
07Z: 3.1       1.6       4.4  1.0
08Z: 2.5       1.9            1.0
09Z: 1.9       2.4       3.2
10Z: 2.4
11Z: 2.3
12Z:
13Z:
14Z:
15Z:
16Z:
17Z:
18Z:
19Z:
20Z:
21Z:
22Z:
23Z:


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

     MUR  SVE  TOM  DIX  MAG
     ---  ---  ---  ---  ---
00Z:
01Z: 3.0            3.8  2.6
02Z: 3.5       2.0  3.1  2.6
03Z:           2.4       2.5
04Z:      4.0  2.3
05Z:      2.8  2.3
06Z:                     2.0
07Z:                     1.2
08Z:                     1.4
09Z:
10Z:
11Z:
12Z:
13Z:
14Z:
15Z:
16Z:
17Z:
18Z:
19Z:
20Z:
21Z:
22Z:
23Z:


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

      MUR  SVE  SAL  TOM  DIX  MAG
     ---- ---- ---- ---- ---- ----
00Z:
01Z:       3.0       4.4       7.8
02Z:       3.0  2.5  5.7       8.4
03Z:       4.5  3.6  6.9       7.7
04Z:       6.0  4.4  7.8       7.6
05Z:  3.5  7.6  4.9  8.3       6.9
06Z:  4.3       5.5       5.0  6.9
07Z:  4.9       5.8            6.1
08Z:  5.0       6.1
09Z:  5.4       6.1       5.0
10Z:  5.8
11Z:  6.0
12Z:
13Z:
14Z:
15Z:
16Z:
17Z:
18Z:
19Z:
20Z:
21Z:
22Z:
23Z:
=========================================
Estimated Average Global foF2:  5.66 MHz.


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

      MUR  SVE  SAL  TOM  DIX  MAG
     ---- ---- ---- ---- ---- ----
00Z:
01Z:       8.4      14.1      28.1
02Z:       8.7  7.8 18.8      28.6
03Z:      12.6 10.8 22.8      26.9
04Z:      18.0 13.6 25.7      26.6
05Z: 10.8 23.6 15.2 27.4      24.1
06Z: 14.2      17.6           24.1
07Z: 15.7      19.1           21.4
08Z: 17.0      20.1
09Z: 18.4      20.7      16.5
10Z: 19.1
11Z: 19.8
12Z:
13Z:
14Z:
15Z:
16Z:
17Z:
18Z:
19Z:
20Z:
21Z:
22Z:
23Z:
===============================================
Estimated Average Global MUF(3000)F2: 18.40 MHz.


OBSERVED TOTAL IONOSPHERIC ELECTRON CONTENT
-------------------------------------------

      PAL  SHE  OSA  TAO  CNV  BOU  ANC
     ---- ---- ---- ---- ---- ---- ----
00Z:                 280  180  220  440
01Z:                 370  120  160  440
02Z:                 410       120  430
03Z:                           100  410
04Z:                           100  410
05Z:                           100
06Z:                           100
07Z:                            99
08Z:                            99
09Z:                            98
10Z:                            94
11Z:                            87
12Z:                            83
13Z:
14Z:                           130
15Z:                 140       170  390
16Z:                 130  280  190  400
17Z:                           210  410
18Z:                 120  270  230
19Z:                 110  300  240  390
20Z:                 110  330  240  420
21Z:                 120  300  250  440
22Z:                 170  250  240  480
23Z:                      200       480


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

MUR = Murmansk                   USSR                (N68E033)
SVE = Sverdlovsk                 USSR                (N56E061)
SAL = Salekhard                  USSR                (N66E066)
TOM = Tomsk                      USSR                (N56E085)
DIX = Dixon                      USSR                (N74E081)
MAG = Magadan                    USSR                (N60E151)
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.


