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 id AA04438; Sat, 31 Jul 93 20:17:59 -0600
From: oler@rho.uleth.ca (Cary Oler)
Message-Id: <9308010217.AA04438@rho.uleth.ca>
Subject: Daily Summary of Ionospheric Data for 25 July
To: solar-daily@lut.fi
Date: Sat, 31 Jul 93 20:17:55 MDT
X-Mailer: ELM [version 2.3 PL11]
Reply-To: SOLAR-DAILY Distribution List <solar-daily@lut.fi>
X-Sequence: 908
Status: OR

                    ---------------------------------------
                    DAILY IONOSPHERIC SUMMARY FOR 25 JUL 93
                    ---------------------------------------


REPORTS OF IONOSPHERIC ABSORPTION
---------------------------------

DIX: Type of Measurement = Riometer.
     Type of Phenomenon  = Auroral Absorption.
     Start of Event: 0420Z
     Event Maximum : 0450Z,  Maximum Absorption: 1 dB
     End of Event  : 0800Z


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

     ASH  MAG  MUR  SAL  TOM  DIX  VBG  GOO  TAO  KEA  RAM  ARG  BER  NIC  DYS  TOW  BOU  MAU
     ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---
00Z:      3.0            3.0       3.1  3.0  3.2  2.6  3.4  3.3   B   3.0  3.3       3.3  2.6
01Z: 2.7       3.1  2.7  3.0       3.2  3.1  3.0  2.7  3.1  3.5   B   2.9  3.2  3.4  3.4  2.7
02Z: 3.0  2.8  3.0  2.8  2.8       3.0  2.8  2.8  2.8  3.3  3.2   A   2.9  3.1  3.3  3.2  2.8
03Z:      3.0  3.0  2.8  2.8       3.0  2.9  2.7  2.9  3.1  2.9   B   2.8  3.2  3.0  3.4  2.9
04Z: 2.8                 2.8       3.1  2.8  2.9  3.1  2.8  2.9   B   3.0  2.8  3.3  3.0  3.1
05Z:      2.8  2.8  3.0  2.9       2.9  2.7  2.9  3.2  2.9  2.9   B   3.4  2.9  3.3  3.0  3.2
06Z: 2.8  3.1  2.9  3.0  2.9       3.0  2.9   A   3.2  3.0   B   3.4  3.0  2.9       3.0  3.2
07Z: 2.9  3.1  2.8  2.5  3.1       3.0  3.4  2.8  3.0  2.9   B    B   3.3            3.2  3.0
08Z: 2.8  3.0       2.8  3.0       3.1  3.4  3.0  3.0  2.2   B    B   3.0  3.3  3.5  3.2  3.0
09Z: 2.8  3.2       2.9  2.8  2.8  2.8  3.1  3.3  2.9  3.2   B    B   3.9  3.3  3.4  3.0  2.9
10Z: 2.8  3.2       2.8  3.2  2.7  3.0  3.1  3.1  2.9  3.0   B    A   3.0  3.1  3.5  3.2  2.9
11Z: 2.8  3.0       3.0  3.0  2.9  2.7  3.6   I   3.0  3.3   A    A   3.0  2.9  2.8  3.3  3.0
12Z: 3.0  3.0       2.9  3.3  2.8  4.2  3.0  3.0  3.0  2.9   B   3.6  2.9  3.4       3.4  3.0
13Z: 2.9  2.9       3.1  3.0  2.9  3.1  3.2  3.0  3.0  3.1   B   2.9  3.1  2.9       3.2  3.0
14Z: 3.0  3.2  3.0  3.1  3.1  2.9  3.3  3.1  2.9  3.0  2.9   A    A   3.1  3.0            3.0
15Z: 3.0  3.0  3.1  3.2  3.0  3.3  3.1  2.8  2.9  3.5  2.9   A   2.9  3.0  3.2            3.5
16Z: 3.0       3.1  3.3  3.0       3.1  3.5   I   3.3  3.4   B    A        3.2  2.8       3.3
17Z: 3.0       3.1  3.1  2.9  3.1  3.1  2.6  3.1  3.3   A    B    A        3.2  3.0       3.3
18Z: 2.7  3.1  3.1  3.1  3.0       2.9  3.3  3.0       3.0   A    A        2.8  2.9
19Z:                               3.0  3.4  3.1       2.6  3.0  2.8       3.0  3.4
20Z:                               2.9  3.1  3.1       2.9   B   3.1       3.1  2.9
21Z:                               2.7  2.9  3.1       2.8  2.9   A        2.9  3.5
22Z:                               2.8  2.9  3.4        A    B   3.5       3.0  3.4
23Z:                               3.3  3.0  3.4       3.0  3.0   A        3.2
=========================================
Estimated Average Global M(3000)F2:  3.04.


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

     ASH  MAG  MUR  SAL  TOM  DIX
     ---  ---  ---  ---  ---  ---
00Z:      1.0            1.0
01Z: 2.0  1.0  1.0  1.0  1.1  1.0
02Z: 1.5  1.0  1.0  1.0  1.4  1.0
03Z: 1.5  1.0  1.0  1.0  1.3  3.0
04Z: 1.4                 1.0
05Z:      1.0  1.5  1.0  1.0
06Z: 2.6  1.0  1.0  1.0  1.0  3.3
07Z: 2.0  1.0  1.0  1.0  1.8
08Z: 2.1  1.0  1.0  1.0       1.2
09Z: 2.0  1.0  1.0  1.0  2.4  1.3
10Z: 2.0  1.0       1.0  1.0  1.6
11Z: 2.0  1.0  1.5  1.0  1.0  3.1
12Z: 2.1  1.0  2.0  1.0  1.2  1.3
13Z: 2.0  1.0  1.5  1.0  1.0  1.0
14Z: 2.0  1.0  1.0  1.0  1.0  1.0
15Z: 1.8  1.0  1.0  1.0  1.0  1.0
16Z: 1.8       1.0  1.0  1.0
17Z: 1.5  1.0  1.0  1.0  1.0  3.0
18Z: 2.0  1.0  1.0  1.0  1.0  1.2
19Z:
20Z:
21Z:
22Z:
23Z:


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

     ASH  MAG  SAL  TOM  DIX
     ---  ---  ---  ---  ---
00Z:      7.1       2.0
01Z: 7.2  5.8            2.8
02Z: 2.8  4.1  2.7  3.7  2.8
03Z:  15  3.9  3.3  4.8
04Z:  12            4.7
05Z:      4.2  3.2  4.0
06Z:      3.1  3.3  5.5
07Z: 4.7  3.4  3.4  3.8
08Z: 4.0  3.5  4.8
09Z: 7.9  5.0  4.6       3.0
10Z: 5.1  2.7       3.4
11Z: 4.9  1.3       5.2
12Z: 4.0       3.6  5.4  2.9
13Z: 4.4  2.1       5.0  3.0
14Z: 2.9  2.0       2.3  3.0
15Z: 4.0  1.3       3.9  3.4
16Z:           2.3
17Z: 2.7  1.2  4.6  2.8
18Z: 3.2  1.7  4.3  3.0  6.6
19Z:
20Z:
21Z:
22Z:
23Z:


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

      ASH  MAG  MUR  SAL  TOM  DIX  CAM  VBG  GOO  TAO  KEA  RAM  ARG  BER  NIC  DYS  TOW  BOU  MAU
     ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
00Z:       5.2            5.0       6.7  7.7  6.7  7.6  9.4  4.5  5.9   B   6.5  6.5  8.3  6.1  9.4
01Z:  6.0  5.2  5.1  4.7  5.3  4.8  6.7  6.8  6.2  7.7 10.3  6.5  4.4   B   5.5  6.5  8.1  5.8 10.3
02Z:  6.0  5.4  5.1  5.0  5.4  5.0  7.3  6.0  5.5  8.0 11.0  6.6  4.7   A   5.5  6.2  7.0  5.7 11.0
03Z:       5.6  5.3  5.0  5.7  5.0  6.7  6.6  4.5  9.1 11.5  5.7  5.5   B   4.9  5.4  7.0  5.8 11.5
04Z:  7.1                 6.0       7.9  6.5  4.2 10.6 11.6  5.8  4.9   B   6.0  4.9  7.3  5.7 11.6
05Z:       5.5  5.3  5.6  6.2       6.7  6.2  4.1 10.8 11.4  5.8  4.9   B   7.6  4.7  6.5  5.1 11.4
06Z:  8.7  6.0  6.0  6.0  6.0       6.3  5.7  3.8   A   9.7  5.8   B   5.2  7.1  4.6  7.1  5.1  9.7
07Z:  8.3  5.6  5.9  5.8  6.0       6.3  5.6  3.7 11.2  8.8  5.2   B    B   7.8       7.0  4.8  8.8
08Z:  7.8  5.7  5.8  5.7  5.7  5.3  5.2  6.6  3.5 12.6  8.6  3.9   B    B   7.6  6.0  5.7  4.4  8.6
09Z:  7.8  5.7  5.8  5.6  6.0  5.4  4.8  5.2  3.7 11.8  8.7  3.4   B    B   8.4  4.0  4.2  3.9  8.7
10Z:  7.6  6.1       5.6  5.7  5.3  3.1  4.8  4.5  9.5  8.5  4.6   B    A   8.6  3.2  3.0  3.6  8.5
11Z:  7.6  6.4  5.8  5.6  5.9  5.2  3.1  4.4  4.5   I   8.2  5.4   A    A   8.3  3.2  3.1  3.2  8.2
12Z:  7.3  6.5  5.8  5.5  5.4  5.5       5.0  5.2  7.9  7.4  5.9   B   6.3  7.7  4.4  3.2  3.7  7.4
13Z:  6.9  6.4  5.9  5.6  5.9  5.2  3.5  5.8  5.0  7.4  7.3  6.2   B   6.8  7.9  5.2  3.1  5.2  7.3
14Z:  6.5  5.9  5.8  5.5  5.9  5.3  3.7  5.8  5.5  6.8  7.2  6.7   A    A   7.9  6.8  3.7  6.1  7.2
15Z:  6.5  5.6  5.4  5.3  6.0  5.6  3.7  7.4  5.5  6.5  7.6  7.0   A   6.2  7.2  7.0  3.1  6.3  7.6
16Z:  7.0       5.4  5.3  6.4       3.7  6.8  5.1   I   6.5  6.6   B    A        6.6  3.6  5.9  6.5
17Z:  6.3       5.6  5.5  5.9  5.0  4.0  7.2  5.4  6.4  6.0   A    B    A        6.7  3.7  6.4  6.0
18Z:  6.5  4.8  5.4  5.8  5.6       4.5  6.3  5.2  6.1       6.2   A    A        6.7  3.0  6.3
19Z:                                4.5  7.2  5.1  6.0       5.7  5.1  6.3       6.6  2.9  6.4
20Z:                                3.5  6.8  5.3  4.7       6.1   B   6.2       6.9  3.1  6.1
21Z:                                4.7  6.9  5.6  4.5       6.0  5.5   A        6.6  4.8  6.4
22Z:                                6.1  7.3  5.8  6.1        A    B   6.6       6.9  6.8   A
23Z:                                6.4  7.8  5.9  6.6       6.8  5.9   A        7.7       6.3
=========================================
Estimated Average Global foF2:  6.18 MHz.


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

      ASH  MAG  MUR  SAL  TOM  DIX  VBG  GOO  TAO  KEA  RAM  ARG  BER  NIC  DYS  TOW  BOU  MAU
     ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
00Z:      15.6           15.0      23.9 20.1 24.3 24.4 15.3 19.5   B  19.5 21.4      20.2 24.4
01Z: 16.2      15.8 12.7 15.9      21.8 19.2 23.1 27.8 20.1 15.4   B  16.0 20.8 27.5 19.9 27.8
02Z: 18.0 15.1 15.3 14.0 15.1      18.0 15.4 22.4 30.8 21.8 15.0   A  16.0 19.2 23.1 18.1 30.8
03Z:      16.8 15.9 14.0 16.0      19.8 13.1 24.6 33.4 17.7 16.0   B  13.7 17.3 21.0 19.5 33.4
04Z: 19.9                16.8      20.1 11.8 30.7 36.0 16.2 14.2   B  18.0 13.7 24.1 17.2 36.0
05Z:      15.4 14.8 16.8 18.0      18.0 11.1 31.3 36.5 16.8 14.2   B  25.8 13.6 21.4 15.3 36.5
06Z: 24.4 18.6 17.4 18.0 17.4      17.1 11.0   A  31.0 17.4   B  17.7 21.3 13.3      15.4 30.6
07Z: 24.1 17.4 16.5 14.5 18.6      16.8 12.6 31.4 26.4 15.1   B    B  25.7           15.2 26.0
08Z: 21.8 17.1      16.0 17.1      20.5 11.9 37.8 25.8  8.6   B    B  22.8 19.8 19.9 13.9 25.8
09Z: 21.8 18.2      16.2 16.8 15.1 14.6 11.5 38.9 25.2 10.9   B    B  32.8 13.2 14.3 11.9 25.2
10Z: 21.3 19.5      15.7 18.2 14.3 14.4 13.9 29.4 24.7 13.8   B    A  25.8  9.9 10.5 11.3 24.7
11Z: 21.3 19.2      16.8 17.7 15.1 11.9 16.2   I  24.6 17.8   A    A  24.9  9.3  8.7 10.5 24.2
12Z: 21.9 19.5      16.0 17.8 15.4 21.0 15.6 23.7 22.2 17.1   B  22.7 22.3 15.0      12.6 21.8
13Z: 20.0 18.6      17.4 17.7 15.1 18.0 16.0 22.2 21.9 19.2   B  19.7 24.5 15.1      16.9 21.9
14Z: 19.5 18.9 17.4 17.0 18.3 15.4 19.1 17.0 19.7 21.6 19.4   A    A  24.5 20.4           21.6
15Z: 19.5 16.8 16.7 17.0 18.0 18.5 22.9 15.4 18.9 26.6 20.3   A  18.0 21.6 22.4           26.2
16Z: 21.0      16.7 17.5 19.2      21.1 17.9   I  21.4 22.4   B    A       21.1 10.1      21.4
17Z: 18.9      17.4 17.0 17.1 15.5 22.3 14.0 19.8 19.8   A    B    A       21.4 11.1      19.8
18Z: 17.6 14.9 16.7 18.0 16.8      18.3 17.2 18.3      18.6   A    A       18.8  8.7
19Z:                               21.6 17.3 18.6      14.8 15.3 17.6      19.8  9.9
20Z:                               19.7 16.4 14.6      17.7   B  19.2      21.4  9.0
21Z:                               18.6 16.2 13.9      16.8 16.0   A       19.1 16.8
22Z:                               20.4 16.8 20.7        A    B  23.1      20.7 23.1   A
23Z:                               25.7 17.7 22.4      20.4 17.7   A       24.6
===============================================
Estimated Average Global MUF(3000)F2: 18.77 MHz.


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

      TAO  ANC  PAL  SHE  OSA  CNV  BOU
     ---- ---- ---- ---- ---- ---- ----
00Z:  200  200  340            200  200
01Z:  210  200  390            180  200
02Z:  250  220  420            180  200
03Z:  310  220  450            140
04Z:  400  220  450            100
05Z:  460  220  420             82
06Z:  470  220  330             93  140
07Z:  460  210  270             87  130
08Z:  510  200  260             86
09Z:  460  190  250             80
10Z:  310  180  220             59  120
11Z:  230  170  200             59  110
12Z:  180  160  170             89  110
13Z:  140  160  160            140  160
14Z:  100  150  150            190  210
15Z:  100  170  140            230  230
16Z:  100  200  110            250  240
17Z:   76  220  120            260  230
18Z:   60  240  160            260  230
19Z:   62  230  200            240  230
20Z:   60  220  240            210  210
21Z:   69  210  280            210  210
22Z:  100  210  300            220  210
23Z:  120  190  280            240  210


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

ASH = Ashkhabad                  USSR                (N37E058)
MAG = Magadan                    USSR                (N60E151)
MUR = Murmansk                   USSR                (N68E033)
SAL = Salekhard                  USSR                (N66E066)
TOM = Tomsk                      USSR                (N56E085)
DIX = Dixon                      USSR                (N74E081)
CAM = Camden                     Australia           (S34E151)
VBG = Vandenberg AFB CA          USA                 (N34W120)
GOO = Goose Bay                  Canada              (N53W060)
TAO = Taoyuan                    Taiwan              (N25E121)
KEA = Keakawapu HI               USA                 (N20W156)
RAM = Ramey AFB                  Puerto Rico         (N18W067)
ARG = Argentia                   Canada              (N48W053)
BER = Bermuda                    Bermuda             (N32W064)
NIC = Nicosia                    Cyprus              (N35E033)
DYS = Dyess AFB TX               USA                 (N32W099)
TOW = Townsville                 Australia           (S19E147)
ANC = Anchorage AK               USA                 (N61W150)
PAL = Palehua HI                 USA                 (N21W158)
SHE = Shemya AK                  USA                 (N52E174)
OSA = Osan AB                    Korea               (N37E127)
CNV = Cape Canaveral FL          USA                 (N28W080)
BOU = Boulder CO                 USA                 (N40W105)
MAU = Maui HI                    USA                 (N20W157)


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.


