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From: oler@rho.uleth.ca (Cary Oler)
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Subject: Daily Summary of Ionospheric Data for 26 May
To: solar-daily@lut.fi
Date: Thu, 27 May 93 0:25:27 MDT
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                    ---------------------------------------
                    DAILY IONOSPHERIC SUMMARY FOR 26 MAY 93
                    ---------------------------------------


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

     VBG  GOO  EIE  TAO  RAM  ARG  BER  LEA  EGL  MAG  MUR  ASH  SAL  TOM  DIX  KHA  JUL
     ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---
00Z: 3.0  3.1  3.1  3.6  2.4  3.6  3.6  2.5  3.0  3.0       2.7                      2.8
01Z:                                              3.2       2.7  2.9  3.1  2.8       2.8
02Z:                                              3.0  2.9  3.0  3.0  3.1       3.1  2.8
03Z:                                                   2.8  3.0            2.8       2.9
04Z:                                              3.0  3.0  2.9  3.0  3.0  2.9       3.0
05Z:                                              3.0  3.1  2.7  3.1  2.9       2.8  3.2
06Z:                                              3.1  2.9  2.7       3.1  2.8        C
07Z:                                              3.2  3.1  2.7  3.1  2.9  3.0  3.0   C
08Z:                                              3.2  2.9  2.8  3.0  2.9  2.9  3.1   C
09Z:                                              3.2       2.7  3.1  3.0  2.9  3.2
10Z:                                              3.2  3.0  2.8  3.2  3.1       3.1
11Z:                                              3.1  2.9  2.8  3.1  3.0  3.1
12Z:
13Z:
14Z:
15Z:
16Z:
17Z:
18Z:
19Z:
20Z:
21Z:
22Z:
23Z:


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

     MAG  MUR  ASH  SAL  TOM  DIX  KHA
     ---  ---  ---  ---  ---  ---  ---
00Z: 1.0       2.0
01Z: 1.0       2.0  1.0  1.0  1.2
02Z: 1.0  1.0  2.0  1.0  1.0       1.1
03Z:      1.0  2.0            1.2
04Z: 1.0  1.0  2.0  1.0  1.2  1.4
05Z: 1.0  1.3  2.0  1.0  1.4       1.1
06Z: 1.0  1.1  2.0       1.0  1.0
07Z: 1.0  1.2  2.0  1.0  1.0  1.6  1.1
08Z: 1.0  1.6  2.0  1.0  1.0  1.3  1.1
09Z: 1.0  1.8  2.0  1.0  1.0  1.0  1.3
10Z: 1.0  2.1  2.0  1.0  1.0       1.5
11Z: 1.0  1.5  2.0  1.0  1.0  1.2
12Z:
13Z:
14Z:
15Z:
16Z:
17Z:
18Z:
19Z:
20Z:
21Z:
22Z:
23Z:


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

     MAG  MUR  ASH  SAL  TOM  DIX  KHA
     ---  ---  ---  ---  ---  ---  ---
00Z: 3.5       4.0
01Z:                3.8  3.3
02Z:                     3.6       5.0
03Z:           4.2
04Z: 3.3       4.3  4.7  4.1  3.2
05Z:      4.0  4.0  6.5  4.0       4.0
06Z: 3.1  4.1  4.2       4.0
07Z: 3.1  4.2  4.4       3.8  3.4
08Z: 3.0       6.7       3.6
09Z: 2.5  4.3  7.4  4.1  4.9  4.2  4.3
10Z: 2.0       8.2  4.2  3.1       3.5
11Z: 1.5            3.8  3.6
12Z:
13Z:
14Z:
15Z:
16Z:
17Z:
18Z:
19Z:
20Z:
21Z:
22Z:
23Z:


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

      VBG  GOO  EIE  TAO  RAM  ARG  LEA  EGL  MAG  MUR  ASH  SAL  TOM  DIX  KHA  JUL
     ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
00Z:  8.7  7.3  5.6  7.5  6.5  6.2  5.7  9.3  5.6       6.0                      5.6
01Z:                                          5.8       6.0  6.0  5.9  5.2       5.4
02Z:                                          5.6  6.0  7.1  6.1  6.5       6.6  5.2
03Z:                                               6.1  7.4            5.8       5.2
04Z:                                          5.8  6.3  6.4  6.5  7.4  6.2       6.1
05Z:                                          5.8  6.0  7.3  6.6  7.6       6.7  6.0
06Z:                                          5.9  6.6  8.4       7.2  6.2        C
07Z:                                          5.9  7.0  9.0  7.0  6.9  6.4  7.2   C
08Z:                                          5.9  7.1  9.0  6.6  6.8  6.0  7.2   C
09Z:                                          6.0  6.6  9.0  6.0  6.7  6.0  6.0
10Z:                                          6.5  6.8  9.1  6.0  6.5       5.9
11Z:                                          7.0  6.1  8.6  6.0  6.4  6.0
12Z:
13Z:
14Z:
15Z:
16Z:
17Z:
18Z:
19Z:
20Z:
21Z:
22Z:
23Z:


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

      VBG  GOO  EIE  TAO  RAM  ARG  LEA  EGL  MAG  MUR  ASH  SAL  TOM  DIX  KHA  JUL
     ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
00Z: 26.1 22.6 17.4 27.0 15.6 22.3 14.2 27.9 16.8      16.2                     15.7
01Z:                                         18.6      16.2 17.4 18.3 14.6      15.1
02Z:                                         16.8 17.4 21.3 18.3 20.1      20.5 14.6
03Z:                                              17.1 22.2           16.2      15.1
04Z:                                         17.4 18.9 18.6 19.5 22.2 18.0      18.3
05Z:                                         17.4 18.6 19.7 20.5 22.0      18.8 19.2
06Z:                                         18.3 19.1 22.7      22.3 17.4        C
07Z:                                         18.9 21.7 24.3 21.7 20.0 19.2 21.6   C
08Z:                                         18.9 20.6 25.2 19.8 19.7 17.4 22.3   C
09Z:                                         19.2      24.3 18.6 20.1 17.4 19.2
10Z:                                         20.8 20.4 25.5 19.2 20.1      18.3
11Z:                                         21.7 17.7 24.1 18.6 19.2 18.6
12Z:
13Z:
14Z:
15Z:
16Z:
17Z:
18Z:
19Z:
20Z:
21Z:
22Z:
23Z:


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

      TAO  ANC  CNV  PAL  SHE  BOU  OSA
     ---- ---- ---- ---- ---- ---- ----
00Z:  170  350  330  400  180  160
01Z:  210  350  290  460  190
02Z:  260  330  250  480  150  140
03Z:  300  330  180  480  170  120
04Z:  360  320  150  430  190
05Z:  400  330  150  390  170
06Z:  430  320  150  360  160   47
07Z:  500  330  150  300  200   42
08Z:  530  330  140  240  200   46
09Z:  520  320  130  200  190   42
10Z:  440  310  130  160  190   40
11Z:  310  300  140  140        34
12Z:       300  180  130  220   51
13Z:       290  250  110  220  110
14Z:       310  280   95  200  170
15Z:       330  300   87  230  230
16Z:       370  320   92  230  240
17Z:  150  410  330  150       130
18Z:  150  440  350  240  150
19Z:  110  430  360  260  160  120
20Z:  120  410  340  300  120  120
21Z:  140  400       350  140  100
22Z:  180  380  330  400  150   83
23Z:  220  360  340  450  180   74


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

VBG = Vandenberg AFB CA          USA                 (N34W120)
GOO = Goose Bay                  Canada              (N53W060)
EIE = Eielson AFB AK             USA                 (N64W147)
TAO = Taoyuan                    Taiwan              (N25E121)
RAM = Ramey AFB                  Puerto Rico         (N18W067)
ARG = Argentia                   Canada              (N48W053)
BER = Bermuda                    Bermuda             (N32W064)
LEA = Learmonth                  Australia           (S21E115)
EGL = Eglin AFB FL               USA                 (N30W086)
ANC = Anchorage AK               USA                 (N61W150)
CNV = Cape Canaveral FL          USA                 (N28W080)
PAL = Palehua HI                 USA                 (N21W158)
SHE = Shemya AK                  USA                 (N52E174)
BOU = Boulder CO                 USA                 (N40W105)
MAG = Magadan                    USSR                (N60E151)
MUR = Murmansk                   USSR                (N68E033)
ASH = Ashkhabad                  USSR                (N37E058)
SAL = Salekhard                  USSR                (N66E066)
TOM = Tomsk                      USSR                (N56E085)
DIX = Dixon                      USSR                (N74E081)
KHA = Khabarovsk                 USSR                (N48E135)
JUL = Juliusruh/Rugen            Germany             (N54E013)
OSA = Osan AB                    Korea               (N37E127)


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.


