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From: oler@rho.uleth.ca (Cary Oler)
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Subject: Daily Summary of Ionospheric Data for 31 May
To: solar-daily@lut.fi
Date: Tue, 1 Jun 93 0:19:10 MDT
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Status: OR

                    ---------------------------------------
                    DAILY IONOSPHERIC SUMMARY FOR 31 MAY 93
                    ---------------------------------------


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

     MAU  VBG  GOO  EIE  TAO  CHU  KEA  RAM  ARG  BER  NIC  DYS  MUR  ASH  SAL  TOM  DIX  KHA  MAG
     ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---
00Z: 2.8  3.0  3.0  2.8  3.1       2.8  3.1  3.2   B   3.0  3.1  2.9  2.8  2.9  2.8  2.5  2.8  2.6
01Z: 2.8  3.1  3.0  2.9  3.0       2.9  3.1   B    B   3.0  3.3       2.8  2.9  2.9
02Z: 2.9  3.2  2.9  2.8  2.8       2.9  3.1  3.0   B   2.9  2.9            2.8
03Z: 2.8  3.3  2.7  2.9  2.8       2.9  2.9  2.8   B   3.0  3.0
04Z: 3.0  3.2  2.6  3.1  2.8       3.0  2.9  2.7   B   2.9  2.8       2.7  3.1
05Z: 3.2  2.9  2.7  2.9  3.0       3.3  2.7  2.9   B        2.8       2.8  2.6  3.0       2.7
06Z: 3.2  2.8  2.9  3.0  2.8       3.2  2.7  3.1  3.0       2.7       2.8  2.9  2.9       2.7  3.0
07Z: 2.8  3.1  2.9  2.9  2.9       2.8  2.6  3.2  3.0       3.0  2.7       2.9  2.9       3.0  3.0
08Z: 2.8  2.8  3.1  3.0  2.9       2.8  2.7  3.4  3.3       2.9  2.8  2.6  2.8  2.9       3.0  3.0
09Z: 2.8  2.6  3.4  2.9  3.0       2.8  3.0  3.3  3.1       2.9  2.6  2.8  2.9  3.0  2.8  2.9  3.0
10Z: 2.8  4.2  3.1  2.9  3.2       2.9  3.3  3.1  3.5       2.9  2.7  2.7  3.0  3.0       2.7
11Z: 3.0  2.9  3.3  2.8  3.1       3.0  3.1  3.1  3.0       2.8  2.7  2.9  2.9  3.1  2.8
12Z: 3.3  2.8  3.2  2.7  2.8       3.3  2.2  3.0  3.0       3.0
13Z: 3.4  3.3  2.3  2.7  2.9   F   3.4  3.1   A   3.1       3.0
14Z: 2.9  2.8  3.0  2.3  2.7  2.7  2.9  2.9  2.9  2.9       2.9
15Z: 2.5  3.1  2.9  2.6  3.0  3.0  2.5  2.9  3.0  3.3       2.8
16Z: 2.6  2.7  3.0  2.7  3.0  3.0  2.6  2.8   B   3.3       2.9
17Z: 2.8  3.0  3.0  2.8  3.2  3.1  2.9  2.9   A   2.9  2.9  2.8
18Z:      2.8  2.8  2.5  3.5  3.0       2.8   B   2.9  2.9  3.3
19Z:      2.9  2.8  2.6  3.2  2.8       2.9   B   3.0  2.9  3.2
20Z:      2.8  2.8  2.7  3.1  2.9       2.8  3.1  2.9  2.9  3.1
21Z:      2.8  2.9  2.6  3.1  2.9       2.8  2.9  3.1  3.0  2.8
22Z:      3.1  3.0  2.6  3.5            2.8   A    A   3.1  2.9
23Z:      2.9  3.0  2.4  3.2            3.0  3.3  3.8  2.9  3.1


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

     MUR  ASH  SAL  TOM  DIX  KHA  MAG
     ---  ---  ---  ---  ---  ---  ---
00Z: 1.0  2.0  1.0  1.1  1.0  1.1  1.0
01Z:      2.0  1.0  1.0  1.0
02Z:           1.0       1.2
03Z:
04Z:      2.0  1.0       1.0
05Z:      2.0  1.0  1.4  1.6  1.3  1.0
06Z:      2.0  1.0  1.0  2.4  1.2  1.0
07Z: 1.1       1.0  1.8  1.6  1.2  1.0
08Z: 1.2  2.0  1.0  1.2       1.1  1.1
09Z: 1.0  2.0  1.0  1.2  1.8  1.4  1.1
10Z: 1.0  2.0  1.0  1.0  1.0  1.2
11Z: 1.0  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)
------------------------------------------------

     MUR  ASH  SAL  TOM  DIX  KHA  MAG
     ---  ---  ---  ---  ---  ---  ---
00Z: 3.1  3.8  5.0  2.9  3.0  4.3  3.9
01Z:      2.2  8.0  3.6  3.0
02Z:           5.0       3.4
03Z:
04Z:      4.4  4.6       3.2
05Z:      4.8  5.8  7.0  3.4  4.2  3.4
06Z:      4.4  5.8  6.2  3.4  6.0  3.9
07Z:                7.0  4.2  8.2  3.7
08Z:      4.3  3.8  6.0       6.2  4.1
09Z:      4.1  4.1  3.4       5.2  5.3
10Z:      5.1  5.7  3.7       5.8
11Z:      4.0  4.7  6.6
12Z:
13Z:
14Z:
15Z:
16Z:
17Z:
18Z:
19Z:
20Z:
21Z:
22Z:
23Z:


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

      MAU  CAM  VBG  GOO  EIE  TAO  RES  CHU  KEA  RAM  ARG  BER  NIC  DYS  LEA  MUR  ASH  SAL  TOM  DIX  KHA  MAG  OTI
     ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
00Z: 11.0  7.6  8.3  7.0  5.9  6.8  5.0      11.0  7.1  6.2   B   7.7  8.0  7.2  5.3  5.8  5.6  6.0  5.2  6.4  5.3
01Z: 11.1  7.4  7.8  6.8  5.5  7.2   F       11.1  5.8   B    B   6.9  7.9  8.2       6.0  5.7  6.5  5.2
02Z: 10.6  8.8  8.0  5.8  5.8  7.4   F       10.6  5.9  5.5   B   6.1  6.7  8.2            5.6       5.4
03Z: 10.5  7.5  7.3  5.4  5.7  8.5   F       10.5  5.9  5.6   B   6.6  5.8  8.0
04Z:  6.1  8.1  6.5  4.9  4.4  9.2   I       11.5  5.8  5.4   B   7.8  5.1  8.6       9.0  5.6       5.2
05Z: 11.8  8.6  5.9  4.5  5.8  9.5   F       11.8  5.2  5.1   B        4.8  8.5       9.4  5.6  6.8  5.2  6.3  5.3
06Z:  9.1  8.2  5.5  4.0  5.7  9.6            9.1  5.0  4.6  5.8       4.8  7.8       9.5  5.8  6.7  5.2  6.3  5.6
07Z:  8.4  7.0  5.2  4.1  5.7 10.1            8.4  4.7  4.1  5.8       4.5   A   6.0       5.8  6.8  5.4  6.5  5.8
08Z:  8.5  5.5  5.2  4.5  5.9 10.5            8.5  4.5  5.2  5.3       4.7  7.4  6.1  8.3  6.0  6.6       6.5  5.9
09Z:  8.2  4.7  5.1  5.8  5.8 11.6            8.2  4.5  5.9  5.8       4.6  6.6  5.9  9.1  5.7  6.6  5.8  6.8  6.0
10Z:  8.2  4.8  5.0  5.9  5.6 10.8            8.2  5.5  6.4  6.4       4.6   A   6.0  8.6  6.0  6.4  5.5  7.0
11Z:  7.8  4.1  4.6  6.5  5.4  9.6            7.8  6.2  6.5  6.7       4.5  5.2  5.9  8.7  6.0  6.5  5.8
12Z:  8.1  3.7  4.3  6.5  5.5  8.2            8.1  7.0  6.6  6.9       5.8  3.1
13Z:  6.0  3.8  5.1  6.3  4.9  8.2        F   6.0  6.9   A   7.2       6.4   B                                      6.6
14Z:  5.0  3.9  6.9  7.0  5.2  9.2       5.5  5.0  7.1  6.3  7.2       7.7  3.1                                     7.1
15Z:  4.5  4.1  7.5  6.7  5.9  9.2       6.4  4.5  7.3  7.3  6.9       8.4  3.1                                     7.2
16Z:  4.5  4.4  8.3  6.7  6.4  9.2       6.4  4.5  7.3   B   6.1       8.0  3.1                                     7.2
17Z:  6.1  4.8  8.5  6.4  6.3  9.2       6.3  6.1  7.4   A   9.0  9.0  8.7  3.4                                     6.9
18Z:       5.1  9.0  6.5  6.1  7.7       6.4       7.5   B   8.6  9.4  6.9  3.6                                     7.0
19Z:       4.7  8.0  6.7  6.0  5.5       6.5       7.3   B   9.3  8.9  8.4  3.0                                     7.0
20Z:       4.4  7.6  7.1  5.7  4.3       6.7       7.5  7.0  9.3  9.2  8.7  2.8
21Z:       5.4  7.9  7.9  5.8  5.1       6.9       8.0  8.1  9.3 10.1  8.9  2.9
22Z:       6.6  7.5  8.0  5.7  7.2   F             8.7   A    A   9.3  8.6  3.3
23Z:       7.5  8.5  8.0  5.5  6.7   F             8.6  8.2  5.1  8.9  8.3   B


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

      MAU  VBG  GOO  EIE  TAO  CHU  KEA  RAM  ARG  BER  NIC  DYS  MUR  ASH  SAL  TOM  DIX  KHA  MAG
     ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
00Z: 30.8 24.9 21.0 16.5 21.1      30.8 22.0 19.8   B  23.1 24.8 15.4 16.2 16.2 16.8 13.0 17.9 13.8
01Z: 31.6 24.2 20.4 16.0 21.6      32.2 18.0   B    B  20.7 26.1      16.8 16.5 18.9
02Z: 30.7 25.6 16.8 16.2 20.7      30.7 18.3 16.5   B  17.7 19.4           15.7
03Z: 29.9 24.1 14.6 16.5 23.8      30.5 17.1 15.7   B  19.8 17.4
04Z: 18.3 20.8 12.7 13.6 25.8      34.5 16.8 14.6   B  22.6 14.3      24.3 17.4
05Z: 38.4 17.1 12.2 16.8 28.5      38.9 14.0 14.8   B       13.4      26.3 14.6 20.4      17.0
06Z: 28.7 15.4 11.6 17.1 26.9      29.1 13.5 14.3 17.4      13.0      26.6 16.8 19.4      17.0 16.8
07Z: 23.5 16.1 11.9 16.5 29.3      23.5 12.2 13.1 17.4      13.5 16.2      16.8 19.7      19.5 17.4
08Z: 23.8 14.6 13.9 17.7 30.5      23.8 12.2 17.7 17.5      13.6 17.1 21.6 16.8 19.1      19.5 17.7
09Z: 23.0 13.3 19.7 16.8 34.8      23.0 13.5 19.5 18.0      13.3 15.3 25.5 16.5 19.8 16.2 19.7 18.0
10Z: 23.4 21.0 18.3 16.2 34.6      23.8 18.1 19.8 22.4      13.3 16.2 23.2 18.0 19.2      18.9
11Z: 23.4 13.3 21.4 15.1 29.8      23.4 19.2 20.1 20.1      12.6 15.9 25.2 17.4 20.1 16.2
12Z: 26.7 12.0 20.8 14.9 23.0      26.7 15.4 19.8 20.7      17.4
13Z: 20.4 16.8 14.5 13.2 23.8   F  20.4 21.4   A  22.3      19.2
14Z: 14.5 19.3 21.0 12.0 24.8 14.9 14.5 20.6 18.3 20.9      22.3
15Z: 11.0 23.2 19.4 15.3 27.6 19.2 11.2 21.2 21.9 22.8      23.5
16Z: 11.7 22.4 20.1 17.3 27.6 19.2 11.7 20.4   B  20.1      23.2
17Z: 17.4 25.5 19.2 17.6 29.4 19.5 17.7 21.5   A  26.1 26.1 24.4
18Z:      25.2 18.2 15.2 26.9 19.2      21.0   B  24.9 27.3 22.8
19Z:      23.2 18.8 15.6 17.6 18.2      21.2   B  27.9 25.8 26.9
20Z:      21.3 19.9 15.4 13.3 19.4      21.0 21.7 27.0 26.7 27.0
21Z:      22.1 22.9 15.1 15.8 20.0      22.4 23.5 28.8 30.3 24.9
22Z:      23.2 24.0 14.8 25.2           24.4   A    A  28.8 24.9
23Z:      24.7 24.0 13.2 21.4           25.8 27.1 19.4 25.8 25.7


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

      TAO  PAL  SHE  OSA  CNV  BOU  ANC
     ---- ---- ---- ---- ---- ---- ----
00Z:  250  400  240       320       360
01Z:  280  410  240       260       350
02Z:  330  390  250                 340
03Z:  380  370  240       190       330
04Z:  410  400  240       170       330
05Z:  430  390  240       160       330
06Z:  430  310  240       170       340
07Z:  460  240  210       160       340
08Z:  500  230  240       160
09Z:  530  210  240       160
10Z:  500  200  200       140
11Z:  340  190  220       170
12Z:  270  180  230       210
13Z:  250  130  220       250
14Z:  240   90  220       290
15Z:  300   91  240       310
16Z:  380  110  230       340
17Z:  370  160  190       360
18Z:  230  230  140       400
19Z:  150  310  100       410
20Z:  110  380   62       420
21Z:  150  430   74       400
22Z:  220  450  100       380
23Z:  270  420  140       400


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

MAU = Maui HI                    USA                 (N20W157)
CAM = Camden                     Australia           (S34E151)
VBG = Vandenberg AFB CA          USA                 (N34W120)
GOO = Goose Bay                  Canada              (N53W060)
EIE = Eielson AFB AK             USA                 (N64W147)
TAO = Taoyuan                    Taiwan              (N25E121)
RES = Resolute Bay               Canada              (N74W094)
CHU = Churchill                  Canada              (N58W094)
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)
LEA = Learmonth                  Australia           (S21E115)
MUR = Murmansk                   USSR                (N68E033)
ASH = Ashkhabad                  USSR                (N37E058)
SAL = Salekhard                  USSR                (N66E066)
TOM = Tomsk                      USSR                (N56E085)
DIX = Dixon                      USSR                (N74E081)
KHA = Khabarovsk                 USSR                (N48E135)
MAG = Magadan                    USSR                (N60E151)
OTI = Ottawa                     Canada              (N45W076)
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)
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.


