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From: oler@rho.uleth.ca (Cary Oler)
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Subject: Daily Summary of Ionospheric Data for 18 October
To: solar-daily@lut.fi
Date: Tue, 19 Oct 93 8:35:39 MDT
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Status: RO

                    ---------------------------------------
                    DAILY IONOSPHERIC SUMMARY FOR 18 OCT 93
                    ---------------------------------------


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

     MUR  ASH  SVE  SAL  TOM  DIX  MAG  JUL  UPS  WLP  MAU  GOO  EIE  TAO  CHU  ARG  BER  NIC  DYS  LEA
     ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---  ---
00Z:                                    2.8  2.7       3.0
01Z:                     3.5       3.4  3.0            3.0
02Z: 2.7            3.0  3.4       3.5  3.0            3.2
03Z: 3.1       2.7       3.5       3.4  3.0            3.4
04Z: 3.0  3.1       3.2  3.7       3.4  3.0            3.5
05Z:      3.1       3.3  3.3       3.5  3.0  3.0       3.5
06Z: 3.4  3.1       3.3  3.4       3.4  3.4            2.8                                3.6
07Z: 3.3            3.3  3.4  3.3  3.4  3.5            3.0                                3.5
08Z: 3.3  3.0       3.3  3.3  3.3  3.3  3.6            3.1                                3.3
09Z: 3.3  3.1       3.3  3.4       3.3                 2.8                                3.3
10Z: 3.3  2.9       3.3  3.6  3.1                      3.0                                3.3
11Z: 3.4  3.1       3.3  3.6       3.0            3.5  3.1  3.5                 3.5       3.3  3.1  3.4
12Z: 3.3  3.1       3.3  3.3       3.0            3.9  3.2  3.3       3.1       3.2       3.3  3.2  3.2
13Z: 3.1  2.9  3.1  3.1  3.2                      3.3  3.7  3.5       3.0   R   3.5       3.4  3.4
14Z: 3.3  2.9  2.8  2.9  3.1                      3.4  3.5  3.3       2.9   R   3.2       3.4  3.4  2.5
15Z:           3.0  2.7  3.1                      3.5  3.2  3.3       2.8   R   3.1       3.7  3.6  3.0
16Z:      2.9  2.9       3.1       2.8            3.1  3.0  3.2                 3.3
17Z:      2.7       2.6  2.8  2.9  2.9            3.2  3.6                 2.9            3.2  3.1
18Z:      2.7                 3.4                 3.0                 2.9  2.8            3.2       2.9
19Z:                                              3.3       3.2        F   3.0  3.4  3.9  2.8       3.0
20Z:                                              3.4       3.2  2.9   F   3.0  3.4  3.8  2.6
21Z:                                              3.5       3.2  3.0  2.9  3.0  3.5  4.0  2.8       3.4
22Z:                                              3.2       3.2  3.3  3.3       3.3  3.3  3.1
23Z:                                              3.1       3.4  3.2  3.4       3.0  2.9  3.1       3.2
=========================================
Estimated Average Global M(3000)F2:  3.20.


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

     MUR  ASH  SVE  SAL  TOM  DIX  MAG
     ---  ---  ---  ---  ---  ---  ---
00Z:
01Z: 1.0       1.8  1.0  1.4       1.1
02Z: 1.0            1.0  1.2       1.0
03Z: 1.5       1.0       1.2       1.0
04Z: 1.0  2.0  1.5  1.5  1.3       1.2
05Z:      2.0  1.5  1.0  1.8       1.2
06Z: 2.3  2.0  1.6  1.6  1.7       1.1
07Z: 3.0       1.6  1.5  1.5  4.2  1.0
08Z: 2.3  2.0  1.5  1.6  1.4  3.0  1.0
09Z: 1.5  2.0  1.4  2.1  1.3       1.0
10Z: 1.5  2.0       1.0  1.4  1.6
11Z: 1.0  2.0  1.5  1.0  1.0       1.0
12Z: 2.2  2.0       1.0  1.0  3.2  1.0
13Z: 2.0  2.0  1.8  1.0  1.0  1.0  1.0
14Z: 2.2  2.0  1.0  1.9  1.5  3.0  1.0
15Z: 1.0  2.0  1.8  1.0  1.5       1.0
16Z: 1.0  2.0  1.4       1.5  1.4  1.0
17Z: 1.0  2.0       1.0  1.5  1.4  1.0
18Z: 1.0  2.0       1.0       1.0  1.0
19Z:
20Z:
21Z:
22Z:
23Z:


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

     MUR  ASH  SVE  SAL  TOM  DIX  MAG
     ---  ---  ---  ---  ---  ---  ---
00Z:
01Z: 4.0                           2.6
02Z: 3.2                           2.5
03Z:                     2.5
04Z: 2.2  3.9                      2.4
05Z:      4.3       3.7  2.5       3.6
06Z:      4.6       2.4  2.4       3.2
07Z:                2.3  2.9       2.2
08Z:      4.6            2.0       2.4
09Z:      4.4  3.0       2.0       2.6
10Z:      4.4                 3.0
11Z:      3.9            1.6       2.1
12Z:      3.6                 5.2  2.1
13Z:      5.0                 5.2  2.0
14Z:      5.2  3.0            4.8
15Z: 4.8  4.8  2.8  2.5            1.9
16Z: 5.0  4.0  3.0            6.2  3.4
17Z: 4.5  3.2       2.5       3.0  3.0
18Z: 3.2  3.2       2.0       5.0  3.7
19Z:
20Z:
21Z:
22Z:
23Z:


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

      MUR  ASH  SVE  SAL  TOM  DIX  MAG  JUL  UPS  WAR  POI  OTI  WLP  MAU  GOO  EIE  TAO  RES  CHU  ARG  BER  NIC  DYS  LEA
     ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
00Z:                                     3.2  2.1  3.2  3.6           16.1
01Z:            3.0       4.2       8.5  3.2  2.1  2.9  3.7           16.1
02Z:  3.0            2.6  6.0       7.6  3.2       3.3  3.7           15.7
03Z:  3.0       5.3       7.5       8.4  2.7       2.9  3.7           15.5
04Z:  3.0 10.0  6.3  6.0  8.6       7.7  2.4        C   3.4           11.5
05Z:       9.4  7.0  6.4  9.2       7.2  2.6  2.3   C   3.0            8.1
06Z:  4.2  9.2  7.0  7.2  9.4       6.4  4.5       5.2  3.2            6.3                                     8.0
07Z:  5.0       8.0  7.7  8.4  6.2  5.9  5.4       6.2  5.5            4.9                                     7.8
08Z:  5.5  9.8  8.0  7.8  8.7  6.4  5.0  6.0       6.9                 5.0                                     7.9
09Z:  6.5  9.2  8.0  7.9  8.2       4.6                                5.0                                     9.1
10Z:  6.7  9.3       7.3  7.3  4.0                                     5.5                                     9.8
11Z:  6.5  9.6  7.5  6.7  6.7       3.9                           5.3  6.0  4.9                      7.6       9.0  3.7  4.9
12Z:  6.6 10.0       5.7  6.0       3.7                      4.9  6.9  6.5  6.2       7.4            7.9       8.1  4.3  4.0
13Z:  5.4  8.2  6.5  4.1  5.1                                6.4  7.6  6.5  6.6       6.0        R   8.0       9.1  6.6
14Z:  4.0  8.2  6.0  3.5  4.3                                7.4  8.2  4.4  7.6       6.3        R   8.5       8.8  8.8  5.4
15Z:            5.3  3.8  3.9                                8.0  8.3  3.1  8.0       6.4        R   8.2       8.6  8.9  5.4
16Z:       4.8  4.2       3.8       2.5                           8.8  3.5  8.2                      8.7
17Z:       4.0       4.0  3.7  4.0  2.7                           9.9  6.3                      5.5            4.3  9.0
18Z:       4.1                 3.8                                9.8                 7.0       5.3            4.3       4.3
19Z:                                                              9.9       7.3        F        5.5  8.2  7.7  4.3       4.1
20Z:                                                              9.5       7.3  5.4   F        5.3  7.9  8.3  4.0
21Z:                                                              8.2       7.0  5.5  2.5       5.2  6.5  5.8  4.1       4.8
22Z:                                                              6.6       5.4  5.7  4.4  4.4       5.6  5.4  4.0
23Z:                                                              4.6       4.0  5.5  7.5  4.1       4.1  3.5  3.9       4.9
=========================================
Estimated Average Global foF2:  6.18 MHz.


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

      MUR  ASH  SVE  SAL  TOM  DIX  MAG  JUL  UPS  WLP  MAU  GOO  EIE  TAO  CHU  ARG  BER  NIC  DYS  LEA
     ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ---- ----
00Z:                                     9.0  5.6      47.5
01Z:                     14.7      28.9  9.6           49.1
02Z:  8.1            7.8 20.4      26.6  9.6           49.5
03Z:  9.3      14.3      26.2      28.6  8.1           52.7
04Z:  9.0 31.0      19.2 31.8      26.2  7.2           39.7
05Z:      29.1      21.1 30.4      25.2  7.8  7.0      28.8
06Z: 14.3 28.5      23.8 32.0      21.8 15.3           17.6                               28.8
07Z: 16.5           25.4 28.6 20.5 20.1 18.9           14.5                               27.3
08Z: 18.1 29.4      25.7 28.7 21.1 16.5 21.6           15.5                               26.1
09Z: 21.4 28.5      26.1 27.9      15.2                14.2                               30.0
10Z: 22.1 27.0      24.1 26.3 12.4                     16.2                               32.3
11Z: 22.1 29.8      22.1 24.1      11.7           18.6 18.6 17.1                26.6      29.7 11.5 16.7
12Z: 21.8 31.0      18.8 19.8      11.1           26.9 20.5 20.5      22.9      25.3      26.7 13.8 12.8
13Z: 16.7 23.8 20.1 12.7 16.3                     25.1 23.7 23.1      18.0   R  28.0      30.9 22.4
14Z: 13.2 23.8 16.8 10.2 13.3                     27.9 15.6 25.1      18.3   R  27.2      29.9 29.9 13.5
15Z:           15.9 10.3 12.1                     29.1  9.8 26.4      17.9   R  25.4      31.8 32.0 16.2
16Z:      13.9 12.2      11.8       7.0           27.3 10.3 26.2                28.7
17Z:      10.8      10.4 10.4 11.6  7.8           31.7 22.7                16.0           13.8 27.9
18Z:      11.1                12.9                29.4                20.3 14.8           13.8      12.5
19Z:                                              32.7      23.4        F  16.5 27.9 30.0 12.0      12.3
20Z:                                              32.3      23.4 15.7   F  15.9 26.9 31.5 10.4
21Z:                                              28.7      22.4 16.5  7.2 15.6 22.8 23.2 11.5      16.3
22Z:                                              21.1      17.3 18.8 14.5      18.5 17.8 12.4
23Z:                                              14.3      13.6 17.6 25.5      12.3 10.2 12.1      15.7
===============================================
Estimated Average Global MUF(3000)F2: 19.77 MHz.


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

      TAO  ANC  CNV  BOU  PAL  SHE  OSA
     ---- ---- ---- ---- ---- ---- ----
00Z:
01Z:
02Z:       480       170
03Z:                 150
04Z:                 140
05Z:                 130
06Z:                 140
07Z:                 130
08Z:                 130
09Z:                 130
10Z:                 130
11Z:            110  130
12Z:  190  470  150  130
13Z:  130  470  200  140
14Z:  150  470       170
15Z:  150  470  290  130
16Z:       470  320  160
17Z:       480       190
18Z:  140  490  380
19Z:  130  530  430  220
20Z:  120  550       240
21Z:  120  550       230
22Z:  180  550       200
23Z:  240  530  210  190


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

MUR = Murmansk                   USSR                (N68E033)
ASH = Ashkhabad                  USSR                (N37E058)
SVE = Sverdlovsk                 USSR                (N56E061)
SAL = Salekhard                  USSR                (N66E066)
TOM = Tomsk                      USSR                (N56E085)
DIX = Dixon                      USSR                (N74E081)
MAG = Magadan                    USSR                (N60E151)
JUL = Juliusruh/Rugen            Germany             (N54E013)
UPS = Uppsala                    Sweden              (N60E018)
WAR = Warsaw                     Poland              (N52W021)
POI = Poitiers                   France              (N46E000)
OTI = Ottawa                     Canada              (N45W076)
WLP = Wallops Island VA          USA                 (N37W075)
MAU = Maui HI                    USA                 (N20W157)
GOO = Goose Bay                  Canada              (N53W060)
EIE = Eielson AFB AK             USA                 (N64W147)
TAO = Taoyuan                    Taiwan              (N25E121)
RES = Resolute Bay               Canada              (N74W094)
CHU = Churchill                  Canada              (N58W094)
ARG = Argentia                   Canada              (N48W053)
BER = Bermuda                    Bermuda             (N32W064)
NIC = Nicosia                    Cyprus              (N35E033)
DYS = Dyess AFB TX               USA                 (N32W099)
LEA = Learmonth                  Australia           (S21E115)
ANC = Anchorage AK               USA                 (N61W150)
CNV = Cape Canaveral FL          USA                 (N28W080)
BOU = Boulder CO                 USA                 (N40W105)
PAL = Palehua HI                 USA                 (N21W158)
SHE = Shemya AK                  USA                 (N52E174)
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.


