solar - geophysical data

CRPL-F 204 PART B FOR OFFICIAL USE

Reference book not to be taken from the library.

PART B

SOLAR - GEOPHYSICAL DATA

National Bureau of Standards Library, N.W, Bldg

SEP2. 01961

ISSUED

AUGUST 1961

U. S. DEPARTMENT OF COMMERCE NATIONAL BUREAU OF STANDARDS

CENTRAL RADIO PROPAGATION LABORATORY BOULDER, COLORADO

CRPL-F 204 NATIONAL BUREAU OF STANDARDS FART B CENTRAL RADIO PROPAGATION LABORATORY

BOULDER, COLORADO

SOLAR - GEOPHYSICAL DATA

CONTENTS

I DAILY SOLAR INDICES

(a) Relative Sunspot Numbers and 2800 Me Solar Flux June - July 1961

(b) Graph of Sunspot Cycle

II SOLAR CENTERS OF ACTIVITY

(a) Calcium Plage and Sunspot Regions - July 1961 (b-d) Final Coronal Line Emission Indices - January -

March 1961

III SOLAR FLARES

(a-f) Optical Observations - July 1961 (g) Flare Patrol Observations - July 1961 (h) Subflares - June 1961 (i) Optical Observations - April 1961 (j) Flare Patrol Observations - April 1961 (k) Ionospheric Effects (SWF-SEA-SCNA-SPA-Bursts) June 1961

IV SOLAR RADIO WAVES

(a) 2800 Me - Outstanding Occurrences (Ottawa) July 1961 (b) 169 Me - Interferometric Occurrences (Nancay) July 1961 (c) 108 Me - Outstanding Occurrences (Boulder) July 1961 (d-f) 25-580, 2100-3900 Mc-Spectrum Observations (Ft. Davis)

April-June 1961

V COSMIC RAY INDICES

(a) Solar Injection Deep River Table-July 18 and 20, 1961 (b) Solar Injection Deep River Graph - July 18 and 20, 1961 (c) Climax Neutron Monitor - June 1961 (d) Deep River Neutron Monitor - June 1961

VI GEOMAGNETIC ACTIVITY INDICES

(a) C, Kp, Ap and Selected Quiet and Disturbed Days, June 1961 (b) Chart of Kp by Solar Rotations - 1961

VII RADIO PROPAGATION QUALITY INDICES

(a) CRPL Quality Figures and Forecasts - North Atlantic and North Pacific - June 1961

(b) Graphs Comparing Forecasts and Observed Quality - North Atlantic and North Pacific - June 1961

(c-d) Graphs of Useful Frequency Ranges - June 1961

VIII ALERT PERIODS AND SPECIAL WORLD INTERVALS

Issued

Aug. 1961

(a) Alerts and SWI - July 1961

The descriptive text was published separately, November i960.

Ia

DAILY SOLAR INDICES

July,

1961 Zurich Provisional

Relative Sunspot Numbers

RZ

Daily Values Solar

Flux at 2800 Me, Ottawa, Canada

Flux

1 60 104 2 65 99

3 68 104 4 63 103

5 44 106

6 50 102

7 51 105 8 60 10 7

9 65 112 10 73 124

11 85 138 12 96 137

13 86 141 14 107 136

15 100 136

16 94 132

17 92 137 18 82 131 19 86 126 20 85 123

21 85 118 22 75 119 23 81 118 24 78 118 25 63 117

26 62 115 27 53 111 28 42 105 29 32 103 30 30 92

31 34 91

Mean: 69.3 116.5

June 1961

American Sunspot

ra

Relative Numbers

1 30

2 25

3 38 4 37

5 46

6 43

7 41 8 40

9 49 10 57

11 56 12 58

13 60

14 72

15 84

16 102

17 108 18 101 19 115 20 126

21 114 22 108 23 79 24 68 25 61

26 42 27 48 28 46

29 52 30 53

Mean: 65. 3

COMMERCE STANDARDS BOULDER

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Calcium Plage Data Sunspot Data

CMP Values

Area Int. History .Age CMP Values

Area Count History

01. 7 S10 6157 6136 1700 3.5 a. S £ 2 50 1 £ ~\ d

01.9 N15 6156 6133 2100 2 £ \ £ 5 02.2 N18 6167 New (700) (3.5) b S~£ 1 (200) (3) b X" £ 03.3 S09 6158 6134 2000 2 £ — £ 2 05.0 Nil 6163 New 3800 3.5 £ — £ 1 130 7 b £

05.1 NO 1 6162 6135 (1800) (2) £ ~\ d 3 07.6 N15 6164 6145 5100 3 £ — £ 2 440 5 £ — £ 09.4 SOI 6165 6142 1800 2 £ — £ 6 12.2 NO 3 6166 * 1600 3 £ — £ - 150 2 £ — £

12.7 Sll 6169 6143 1000 2.5 £ - £ 6

12.8 NO 6 6168 6140 (2000) (3) £ -V d 5 14. 1 N15 6170 New 1100 3 £ \ £ 1 50 1 £ ~\ d

14.4 S10 6171 6144 5100 3.5 £ — £ 2 1420 14 £ — £

17.2 N13 6172 6151 4000 3 £ — £ 2 220 1 £ — £

18.5 S08 6173 6 146 1500 2 £ — £ 2

20.3 S10 6174 New 2600 3.5 £ \ £ 1 110 3 £ \ £

20.9 N13 6175 6149 1900 3 £ / £ 4 (190) (3) b X- £

23.0 N17 6183 New (200) (2.5) b £ 1 23.1 NO 3 6176 New 1400 3.5 £ - £ 1 120 2 £ d

23.5 S13 6177 New 1800 3 £ - £ 1

25.1 NO 8 6178 6155 3900 3.5 £ — £ 2 550 5 £ — £

26.4 N20 6179 6160 1700 2.5 £ — £ 2 30.0 N18 6180 6167 1000 2 £ — £ 2 (60) (3) b X* £

30.1 S03 6181 6158 2200 2.5 £ — £ 3 (50) (1) £ -x d

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JULY 1961

HOUR-UT

I 2 3 4 5 6 7 8 9 10 I I 12 13 14 15 16 17 18 19 20 21 22 23 24

I

COMMERCE - STANDARDS - BOULDER

Stations Include:

Anacapri (Swedish)

Arcetri

Bucharest

Hawaii

Huancayo

Lockheed

McMath-Hulbert Sacramento Peak

Ondrejov Tashkent

Royal Greenwich Observatory Wendelstein

Herstmonceux

SUBFLARES 111 h

Noted as follows: Date- Universal Time - Coordinates

JUNE 1961

WENDEL 02 0601 E S07 E67 LOCKHEED 15 1733 N12 W74 LOCKHEED 22 1859 N 12 W42 * ARCETR1 02 0840 E S06 E 58 MCMATH 15 1737 N12 W78 LOCKHEED 22 2004 N12 W43

MCMATH 02 1313 E Nil W89 * WENDEL 15 1741 E N03 W06 SAC PEAK 22 2006 N14 W43 * LOCKHEED 15 1752 N02 W18 LOCKHEED 22 2245 N10 W47

K00A1K.NL 03 0245 E N07 W48 LOCKHEED 15 1833 N25 E 78 LOCKHEED 22 2250 Nil W46 LOCKHEED 03 1731 N17 W46 LOCKHEED 15 1833 N02 W 18 LOCKHEED 22 2328 Nil W50 LOCKHEED 0) 1741 N09 W56 LOCKHEED 15 1840 N12 W74 LOCKHEED 03 1848 N00 E59 LOCKHEED 15 1841 S06 E29 WENDEL 23 0739 E Nil W47 LOCKHEED 03 2030 N00 E59 MCMATH 15 1923 NO 1 WO 7 WENOEL 23 0752 E N13 WSO LOCKHEED 03 2138 N1 7 W47 LOCKHEED 15 1923 N02 W08 * WENDEL 23 1014 E N12 W48 LOCKHEED 03 2245 N02 E55 LOCKHEED 15 1955 NOO W05 * ARCETRI 23 1045 E Nil W54 LOCKHEEO 03 2340 N02 E 55 LOCKHEEO 15 2012 S06 E 28 * WENOEL 23 1045 E Nil W54

LOCKHEED 15 2044 NO 1 EOO * CAf ,71 S 23 1402 E N12 W54 LOCKHEED 04 0031 S07 E34 SAC PEAK 15 2054 S14 E 38 ONDREJOV 23 1537 N14 W55 K0DA1KNL 04 0225 E S07 E35 LOCKHEED 15 2110 N13 W 7 7 LOCKHEED 23 1652 N12 W58 MEUDON 04 1012 N02 E48 LOCKHEED 15 2117 N22 E90 * LOCKHEED 23 1752 Nil W49 LOCKHEED 2144 S07 E23 LOCKHEED 15 2200 N1 3 W77 LOCKHEED 23 1823 N13 W45 LOCKHEED 04 2145 N00 E42 HAWAII 15 2202 N02 W09 HAWAI1 23 1824 N13 W47 LOCKHEED 2203 N00 E24 LOCKHEED 15 2202 N02 W09 LOCKHEED 23 1838 Nil W49 LOCKHEED 04 2242 NOO E24 MCMATH 15 22 03 N02 W09 IOCKHEED 23 1850 N1 3 W58 LOCKHEED 04 2247 S07 E25 LOCKHEED 15 2210 N22 E90 LOCKHEED 23 1930 N 1 2 W55 HAWAI 1 04 2250 E S06 E24 LOCKHEED 15 2315 N13 W 7 7 HAWAI1 23 1934 N23 W56 LOCKHEED 04 2314 NOO E42 LOCKHEED 15 2352 N13 W 7 7 LOCKHEED 23 1945 N12 W50

* HAWAII 15 2358 E N21 E90 LOCKHEED 23 2236 N14 W6 5 LOCKHEED 03 0033 NOO E42 HAWAII 23 2238 N16 W66

* STOCKHOLM 03 1010 NOB E03 LOCKHEED 16 0040 N22 E90 LOCKHEED 23 2245 N 12 W55 * MCMATH 03 1522 N02 E 33 LOCKHEED 16 0111 NOO Wll LOCKHEED 23 2255 N14 W61 * R 0 HERST 03 1532 E NO 1 E 34 WENDEL 16 0538 E N02 W13 HAWAII 23 2318 N16 E01

SAC PEAK 03 1546 Nil E05 MEUDON 16 0717 N02 W14 LOCKHEED 23 2319 Nib w02 SAC PEAK 1550 S05 E13 MEUDON 16 0801 S07 E22 LOCKHEED 23 2323 N13 W60 SAC PEAK 03 1652 S05 E14 * MEUDON 16 0832 S07 E22 LOCKHEED 23 2346 N12 W55 MCMATH 03 1655 S04 E14 ARCETRI 0833 E S06 E94 MCMATH 03 1948 NO 1 E 30 * CAPRI S 16 0846 E S04 E22 LOCKHEED 24 0025 N13 W61

* H Ay A I I 05 2142 E N01 E 23 * ONDREJOV 16 0958 S1 4 W1 3 LOCKHEED 24 0050 N13 W61 SAC PEAK 05 2302 N 12 EOO ★ ARCETRI 16 1000 E S10 W10 WENDEL 24 0517 E N16 W06

CAPRI S 16 1037 E S 1 2 W09 * WENDEL 24 0812 E N10 W64

* MCMATH 06 1235 NO 1 E21 MCMATH 16 1454 S 1 2 W1 3 WENDEL 24 1030 E S08 W47 HAWAII 2008 N03 E15 LOCKHEED 16 1633 N 1 4 W90 * MEUDON 24 1030 N12 W60 LOCKHEED Ob 2124 U NOO E16 LOCKHEED 16 1755 N03 W23 WENDEL 24 1113 E N12 W62 HAWAII Ob 2224 NO 1 E 1 5 LOCKHEED 16 1845 SO 7 E16 MCMATH 24 1152 N14 W 1 0 LOCKHEED 06 2236 N02 E 1 5 LOCKHEED 16 1935 S14 W1 3 LOCKHEED 24 1633 N1 3 W70 LOCKHEED 2309 NO 1 E17 LOCKHEED 16 2009 S14 W14 SAC PEAK 24 1848 N 13 W61 LOCKHEED 06 2328 S04 woe LOCKHEEO 16 2042 S13 W18 HAWAII 24 1850 E N07 W58

LOCKHEED 16 2 106 N06 W 18 MCMATH 24 1854 E N13 W60 MEUDON 07 0621 N02 E07 LOCKHEED 24 2220 E N13 W70 LOCKHEED 07 1928 S04 W 18 LOCKHEED 17 0017 S10 E10 LOCKHEED 24 2228 N1 5 W 16

OH LOCKHEED 17 0025 Sll E 17

ONDR E JOV 25

0535 N14 W65 LOCKHEED 17 0104 NO 3 W24 ONDREJOV 25 1 106 N 14 W80

* CAPRI S 09 1252 N02 W18 HAWAII 17 0108 S09 W23 * SAC PEAK 25 1306 E N22 W36 WENDEL 09 1542 E N02 E 77 KODAIKNL 17 0200 E N03 W23 SAt PEAK 25 1440 S07 W48 WENDEL 09 1707 E S04 W45 ONDREJOV 17 1217 S03 W62 CAPRI S 25 1455 E N13 W85 HAWAI1 09 1838 NO 1 £85 MCMATH 17 1218 S04 W70 LOCKHEED 25 1600 E N16 W25

* LOCKHEED 09 1939 NO 1 E76 MEUDON 17 1333 N06 W25 LOCKHEED 25 1651 N15 W23 * HAWAII 09 1940 NO 1 E85 MCMATH 17 13 36 NOS W24 LOCKHEED 25 1 703 N1 7 W85 * LOCKHEED 09 2103 NO 1 E 76 WENDEL 17 1457 E Sll EOT LOCKHEED 25 1719 N 1 5 W85 * MCMATH 09 2108 E N02 E77 LOCKHEED 17 1634 NO 3 W 31 SAC PEAK 25 1720 N16 W81

LOCKHEED 09 2129 S03 W51 LOCKHEED 17 1924 S12 E07 LOCKHEED 25 1741 N15 W85 LOCKHEED 09 2141 S13 W71 LOCKHEED 17 2041 S09 E04 SAC PEAK 25 1828 N12 W39 LOCKHEED 09 2205 S02 W52 LOCKHEED 17 2116 NOO W34 LOCKHEED 25 1830 N1 5 W65 LOCKHEED 09 2212 N 16 W66 LOCKHEED 17 2202 SOI W33 HAWAI1 25 1850 N14 W90

* LOCKHEED 09 2246 N02 E78 MCMATH 17 2206 NO 1 W 34 LOCKHEED 25 1940 N17 W80 ★ HAWAII 09 2250 E NO 1 E85 LOCKHEED 17 2207 Nil E 75 MCMATH 25 2110 N14 W87

LOCKHEED 09 2252 SI 3 W72 LOCKHEED 17 2246 SOI W35 HAWAI1 25 2114 N15 W90 LOCKHEED 25 2134 N10 W80

LOCKHEED 10 0038 N02 E 78 LOCKHEED 18 0025 N24 E63 LOCKHEED 25 2237 N16 W90 MEUDON 10 10/1 N02 W31 WENOEL 0656 E S08 EOO MCMATH 25 2237 S16 E90 SAC PEAK 10 1318 S1 4 W68 WENDEL 18 0657 E Sll W 35

* SAC PEAK 10 1506 NOO W37 WENOEL 18 0703 E S06 W80 * STOCKHOLM 26 0952 N16 W31 SAC PEAK 10 1834 N02 E67 WENDEL 18 0728 E S06 W85 LOCKHEED 26 1600 S07 W67 LOCKHEED 10 1856 U SI 2 W90 WENDEL 18 0738 E Sll W35 LOCKHEED 26 1633 SO7 W65 LOCKHEED 1858 NOO W39 WENDEL 18 1108 E S12 W36 LOCKHEED 26 1739 N15 W39 LOCKHEED 10 1944 N02 W38 * MCMATH 18 1318 S10 E40 MCMATH 26 1740 N1 5 W40 LOCKHEED 10 2019 SOI W65 MCMATH 18 1348 Sll W37 LOCKHEED 26 1843 S08 W78 LOCKHEED 10 2153 SOI W65 ONDREJOV 1515 E NO 3 W43 LOCKHEED 26 2001 N 1 4 W41 LOCKHEED 10 2252 NO 3 W42 LOCKHEED 18 1728 512 W39 HAWAI I 26 2004 N18 W40

LOCKHEED 18 1751 SO 7 W90 MCMATH 26 2004 N15 W 41 MEUDON 11 0821 N02 W50 LOCKHEED 18 1851 SO3 W45 LOCKHEED 26 2047 S10 W39

* MEUDON 11 0930 N02 W52 LOCKHEED 18 1920 N12 E65 LOCKHEED 26 2300 S06 W70 * MEUDON 11 0955 N02 E55 LOCKHEED 18 1941 N12 E65 SAC PEAK 26 2300 N15 W43 * R 0 HERST 11 1002 E N02 W47 HAWAII 18 2354 N08 E 37 MCMATH 26 2301 N15 W42

CAPRI S 11 1453 S14 E63 LOCKHEED 26 2301 N16 W43 LOCKHEED 11 1825 S04 W71 ONDREJOV 19 0620 E Sll W13 HAWAII 26 2302 E N16 W43 LOCKHEED 11 1844 N03 E53 WENDEL 19 0623 E S 1 2 W09 MCMATH 11 1908 N02 E54 WENDEL 19 0624 E S08 W 15 MCMATH 27 1633 E N1 5 W52 LOCKHEED 11 2315 N02 W52 WENDEL 0806 E Sl2 W50 LOCKHEED 27 1635 E N14 W52 LOCKHEED 11 2323 N02 E50 WENDEL 19 0855 E NO 1 W55 SAC PEAK 27 1716 N14 W54

WENDEL 19 0956 E N10 W43 MCMATH 27 1719 E N1 5 W52 LOCKHEED 12 0111 N04 W58 WENDEL 19 1039 E N 10 W43 LOCKHEED 27 1722 E N14 W52 HAWAII 12 0112 NO3 W53 WENDEL 19 1057 E N10 W46 LOCKHEED 27 1806 U S07 W80

* MEUOON 12 1055 N04 E50 WENDEL 19 1103 E S08 W23 LOCKHEED 27 2009 NO 5 E10 WEr DEL 12 1135 E NO 3 E45 WENDEL 19 1137 E NO1 W56 LOCKHEED 27 2021 N1 3 W54 ONDREJOV 12 1141 E NO3 E44 WENDEL 19 1219 E S12 W50 LOCKHEED 27 2220 NOS E09

* MCMATH 12 1146 E N02 W60 WENDEL 19 1251 E S12 W51 LOCKHEED 27 2303 S08 W85 ★ MCMATH

SAC PEAK 12 1147 N26 E20 SAC PEAK 19 1424 S 1 2 W21

MCMATH 28 1149 N05 W01 MCMATH 12 1308 S1 3 E85 LOCKHEED 19 1605 E SI 2 W52 ONDREJOV 28 1243 Nil W63 SAC PEAK 12 1504 U N03 E38 LOCKHEED 19 1615 S07 W23 MCMATH 28 1430 N12 E90 SAC PEAK 12 1628 NO2 E41 LOCKHEED 19 1650 N13 E 54 SAC PEAK 28 1432 N12 W62 SAC PEAK 12 1724 N03 E40 SAC PEAK 19 1652 N14 E55 MCMATH 28 1523 N12 E90 LOCKHEEO 12 1833 N02 E33 LOCKHEED 19 2044 S1 3 W55 SAC PEAK 28 1524 N12 E90 LOCKHEED 12 1909 N02 £33 LOCKHEED 19 2117 N1 2 E01 SAC PEAK 28 1608 N12 W64 LOCKHEED LOCKHEED

12 1954 N02 E 33 LOCKHEED 19 2141 S09 W27 LOCKHEED LOCKHEED

28 1617 E 1818

N13 W90 N06 W04

MCMATH 12 2053 NO 3 E 31 LOCKHEED 20 0053 N13 W03 LOCKHEED 28 1944 Nil W65 LOCKHEED 12 2309 N05 E40 * MEUDON 20 0725 N12 E56 LOCKHEED 28 2030 N04 W06

ARCETRI 20 0927 E N12 W07 HAWAI I 28 2034 N06 W05 MEUDON 13 0636 N02 E23 WENDEL 20 1254 E Sll E 37 LOCKHEED 28 2051 N1 2 W66 MEUOON 13 0732 N02 E25 SAC PEAK 20 1552 S12 W36 HUANCAYO 28 2051 N12 W60 SAC PEAK 13 1404 N02 E21 LOCKHEED 20 1729 S09 W15 HAV A I I 28 2052 N14 W65 SAC PEAK 13 1425 S02 E26 WENDEL 20 1750 E N03 W76 LOCKHEED 13 1911 N03 E25 LOCKHEED 20 1915 S09 W15 LOCKHEED 29 0040 N04 W04 LOCKHEED 13 2020 S10 E 59 LOCKHEED 20 2210 Nil E37 MEUDON 29- 0750 N06 W12 LOCKHEED 13 2035 N02 E19 LOCKHEED 20 2357 N08 E 34 * MEUDON 29 1310 N 1 3 W70 LOCKHEED 13 2109 NO 3 E 18 * MCMATH 29 1317 N14 W77 LOCKHEED 13 2123 NO 3 E 24 ONDREJOV 21 0457 E N12 W20 * ONDREJOV 29 1330 E N 1 5 W75 LOCKHEED 13 2126 NO 1 E19 ONDREJOV 21 0541 N12 W20 LOCKHEED 29 1750 N05 W20 LOCKHEED 13 2236 SOI E21 MCMATH 21 1154 N 10 E 2 7 MCMATH 29 1750 NO 7 W 19 LOCKHEED 13 2321 N05 E16 SAC PEAK 21 1318 N14 W24 LOCKHEED 29 1820 N13 W74

SAC PEAK 21 1348 N12 E29 LOCKHEED 29 1845 NOS W20 WENDEL 1407 E S10 E30 MCMATH 21 1350 N12 E 27 MCMATH 29 1901 NOS W20

* MEUDON 14 1605 N03 E10 MCMATH 21 1546 N10 E25 LOCKHEED 29 1917 N12 W78 LOCKHEED 14 1814 S08 £48 SAC PEAK 21 1722 E N10 E27 LOCKHEED 29 1922 N13 E64 LOCKHEED 14 1935 S08 E40 MCMATH 21 2035 Nil E22 SAC PEAK 29 1945 U N06 W21 LOCKHEED 14 2013 S07 E45 LOCKHEED 21 2100 E N 14 E24 LOCKHEED -•9 1947 N06 W21 LOCKHEED 14 2044 N01 E04 SAC PEAK 21 2107 E N14 E24 LOCKHEED 29 2057 N05 W20 MCMATH 14 2047 N02 E04 LOCKHEED 21 2119 N 1 4 W28 LOCKHEED 14 2122 S09 E48 LOCKHEED 21 2133 N12 W24 ★ CAPRI S 30 0618 N07 W24 LOCKHEED 14 2210 S09 E48 LOCKHEED 21 2136 N08 E21 WENDEL 30 0730 E N08 W26 LOCKHEED 14 2230 NO1 E04 SAC PEAK 21 2136 N09 E23 ★ONDREJOV 30 0743 N07 W28 LOCKHEED 2300 S09 E48 LOCKHEED 21 2233 Nil E22 ARCETR I 30 0826 E N06 W27 LOCKHEED 14 2332 NO 1 E04 LOCKHEED 21 2257 Nil W26 WENOEL 30 0829 E NO7 W27 LOCKHEED 14 2334 S07 E43 LOCKHEED 21 2305 N14 W30 WENDEL 30 0913 E NO7 W27 LOCKHEED 14 2357 NOO E04 LOCKHEED 21 2353 N14 W31 WENOEL 30 1052 E NO7 W26

ARCETRI 30 1114 E N06 W29 WENDEL 15 0541 E S03 W37 LOCKHEED 22 0024 N12 W30 WENDEL 30 1117 E N08 W28 WENDEL 15 0625 E N07 W68 LOCKHEED 22 0107 N13 E24 MCMATH 30 1122 N08 W30 MEUDON 15 0930 S07 E 37 WENDEL 22 0620 E Nil W38 WENDEL 30 1140 E NOS W29

* CAPRI S 15 0940 S07 E37 ONDREJOV 22 0907 Nil W38 MCMATH 30 1156 N08 W29 * MEUDON 15 0948 S07 E37 ONDREJOV 22 0942 N 12 W38 WENDEL 30 1212 E N08 W30

LOCKHEED 15 1614 S07 E32 + WENDEL 22 1000 E N10 W35 WENDEL 30 1335 E SI3 E20 LOCKHEED 15 1627 N12 W74 * MCMATH 22 1107 Nil W39 WENDEL 30 1422 E NO7 W31 LOCKHEED 15 SO7 E32 * CAPRI S 22 1108 E N15 W39 WENDEL 30 1425 E NOS W31

* MCMATH 15 1702 S09 E30 CAPRI S 22 1111 E S18 E28 WENDEL 30 1442 E N08 W31 * LOCKHEED 15 1704 S09 E29 * MCMATH 22 1146 N21 E05 WENDEL 30 1442 E S1 3 E 19 * LOCKHEED 15 1717 N02 W07 * CAPRI S 22 1150 E N21 E09 WENDEL 30 1604 E NOS W31 * MCMATH 15 1718 N02 W06 ARCETRI 22 1537 E N13 W 39 WENDEL 30 1754 E NO? W32

*Rated aa flai of 3- 1 by other observatories (See CRPL-F 203 Part B to r July 1961)

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6

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17

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19

20

2 I

22

23

24

25

26

27

28

29

30

INTERVALS OF NO FLARE PATROL OBSERVATIONS

APRIL 1961 nij

HOUR-UT

I 2 3 4 5 6 7 8 9 10 I I 12 13 14 15 16 17 18 19 20 21 22 23 24

-

1

Stations Include:


Abastumani

Alma Ata

Arcetri

Bucharest

Good Hope

C1imax

Hawaii

Huancayo

Kyoto

Kharkov

Kiev GAO

Lockheed

McMath-Hulbert

Meudon

Mitaka

Moscow - Gaish

Ondrejov

Ot t awa

Pirculi Tashkent

Royal Greenwich Observatory Uccle

Herstmonceux Voroshilov

Sacramento Peak Wendelstein

Schauinsland

S ime iz

IONOSPHERIC EFFECTS OF SOLAR FLARES

SHORT WAVE RADIO FADEOUTS

SUDDEN COSMIC NOISE ABSORTION

SUDDEN ENHANCEMENTS OF ATMOSPHERICS

SUDDEN PHASE ANOMALIES SOLAR NOISE BURSTS AT 18 Me

JUNE 1961

UNIVERSAL TINE SWF MPORTANCE WIOE SPREAO

INDEX

STATIONS KNOWN FLARE JUNE

1961 START ENO MAX TYPE

IMP A8S SCNA SEA SPA BUR

ro3 1700 1840 X 1 BO Lo 3 1700 1915 1850 X

05 1235 1238 1 4 BO MC [05 1525 1600 S 1 + 5 MC AN BE BO FM HU PR 1520

M 05 1525 1610 1535 X 1 BO 1.05 1548 1550 1 4 BO MC

105 2142 2156 1 1 HA 2140E

*105 2151 2237 2159 17 1 1 HA L05 2154 2256 2204 1 1 HA

05 2301 2314 1 1 HA

07 0832 0905 S 2 3 PU JU 0830E

08 1505 1630 1510 X 1 BO 08 1917 1919 1- 1 HA

08 2055 2125U 2110 X 1 BO 08 2125 2210 2130 X 1 BO

* 09 1257 1320 S 1 5 PR MC PU 1254E 09 1438 1452 s 1 5 MC BE PR PU 1436 09 2138 2143 2142 2 5 BO HA MC

[i 1 1458 1610 1510 X 1 BO 1502 1 1 1503 1600 S 2 + 5 FM BE BO HU MC NE PR

* 1 1 1505 1511 2 + 4 BO MC

11 1505 1520 1513 22 1 + 4 BO MC

11 1505 1600 1519 1 + 5 DU A1 MC NE A5

11 1515 1519 2 4 BO MC 1 1 2055 2130 2100 X 1 BO

12 1814 1815 1 4 80 MC

13 1631 1633 1 + 1 MC 13 2035 2037 1 + 5 MC HA 13 2142 2144 1- 5 MC HA

[i4 0934 0954 S 1 3 JU NE 0924 [l4 0935 1019 0938 2 3 DU NE 14 1625 1650 SL 1 + 5 PR BE HU MC 1610 14 2046 2048 1 + 5 MC HA 14 2332 2336 2 1 HA 14 2358 0001 1 + 1 HA 2354

15 1454 1457 1 + 4 BO MC 15 1600 1650 X 1 BO 1622 .15 1600 2000 1730 15 1635 1638 1 + 4 BO MC

* 15 1638 1643 2 4 BO MC 15 1640 1705 1650 20 1 4 BO MC 15 1640 1710 1655 1 5 BO A1 A3 A6 MC PA 15 1640 1715 S 1 + 5 MC BE BO DA FM HU PR 15 1644 1653 1 + 4 BO MC 15 1700 1710 1707 2 + 4 BO MC 1710

15 1717 1722 2 5 BO HA MC 15 1720 1735 S 1- 5 MC BO FM PR 15 1739 1741 1 4 BO MC 15 1820 2055 1 4 BO MC 15 2103 2110 2107 2 4 BO MC (Series of bursts) 15 2203 2206 2 5 BO HA MC 15 2339 2341 l- 1 HA 15 2346 2349 1 + 1 HA

16 00 34 0037 1 1 HA 16 0043 0045 1 1 HA

16 1604 1940 1650 X 1 BO

17 0108 0111 1 + 1 HA

17 0200 0202 1 1 HA 17 1811 1812 1- 4 BO MC

18 0618 0658 0626 2 1 All 18 1709 1711 1 4 BO MC 18 1725 1726 1- 4 BO MC 18 1746 1747 1- 4 BO MC

19 1307 1311 1310 1 1 MC 19 1437 1441 1 4 BO MC 19 1913 1915 1 4 BO MC 19 2035 2036 1- 4 BO MC 19 2147 2150 1 5 BO HA MC

22 1320 1935 1- 4 BO MC (Minor noise storm)

1403 1435 S 1 5 MC BO FM PR PU 1402

[23 1403 1540 1411 1 5 DU A3 NE PA A5 23 1600 1650 1620 X 1 BO 1635 23 2019 2022 1- 4 BO MC

25 0545 0625U 0600 1 4 All TA

25 1700 2010 1815 x 1 BO 25 2009 2010 1- 4 BO MC

*29 1317 1322 1320 2 4 BO MC 1315 29 1915 1917 1 4 BO MC 29 1921 1923 1 4 BO MC 29 1955 2030 1 + 4 BO MC (Series of bursts) 29 2050 2150 2110 25 1 + 1 BO 29 2050 2200 2117 1 + 5 80 A1 A3 MC 29 2100 2150 2108 X 1 BO

[29 2102 2125 SL 1- 5 MC AD BE

COMMERCE ST4NDAR0S - BOULDER

1. The times of observ 2. Under SWF type: S = 3. Column headed "ABS" 4. Column headed "BUR" 5. Column headed "SPA"

it Ion of the events are thoi S-SWF; SL = Slow S-SWF. is the percent absorption of the SCNA. Is for solar noise bursts at 18 Me. is sudden phase anomalies as observed

f the first station listed In the "STATIONS"

Boulder, Colorado on GBR-England except that on July 29 event is as observed on NBA-Panama Canal Zone.

6. DA = Darmstadt, G.F.R.; JU = Juhlesruh, G.D.R.; TA = Tasmania. 7. Asterisk * Indicates Sudden Enhancement of Signal from 18 kc (NBA Panama Canal Zone) observed by A5.

SOLAR RADIO EMISSION

OUTSTANDING OCCURRENCES

JULY 1961

IVa

OTTAWA 2800 MC

JULY 1961

TYPE START UT DURA

HRS

TION MAXIMUM REMARKS

MINS TIME UT PEAK

FLUX

MEAN

FLUX

11 3 Simple 3 A 1332 >43 1348 5 3.5

2 Simple 2 1332.5 2.3 1333.5 11 5

2 Simple 2 f 1337 0.9 1337.3 22 11

11 9 Precursor f 1604 46 8 4

6 Complex f 1650 1 55 1745 1500 360

4 Post Increase A 4 45 65 30

2 Simple 2 f 1952 36 2002.3 230 90

12 2 Simple 2 f bllOO > 45 1114 1210 436 In sunrise

4 Post Increase 3 45 45 13

13 6 Complex 1931 2.7 1931.8 9 4

13 3 Simple 3 f A 2135 2 10 2256 10 4

2 S imp le 2 2213 2.3 2214 11 4

13 2 Simple 2 f 2241.5 2 2242.3 23 8

6 Complex f 2245 1 2245.5 24 12

15 3 Simple 3 A 1432 7 38 1623 54 23

6 Complex f 1432 14 1436.3 54 16

6 Complex f 1510.5 6.5 1512 76 14

6 Complex f 1536 47 1610 111 25

16 2 Simple 2 1557.3 9.5 1557.8 15 4.6

16 3 S imp le 3 1620 30 1628 4 3

16 3 S imp le 3 A 1933 1 52 1955 16 7

2 Simple 2 1950 5.3 1952 14 8

17 3 Simple 3 A 1307 1 33 1355 7 4

2 Simple 2 f 1307 3 1307.8 30 10

2 Simple 2 f 1315 24.5 1320 21 9

1 Simple 1 1403.8 2 1404.5 3 2

17 3 Simple 3 f A 1640 40 1650 4 3

6 Complex 1657 2 1657.5 7 2.3

17 3 Simple 3 1830 45 1850 4 2

17 6 Complex f 2140 22 2141.8 54 28

4 Post Increase 1 17 15 6

18 . Record Incomplete bl215 >2 05 indet. 26 —

18 3 S imp le 3 2106 34 2112 4 3

19 3 Simple 3 A 1452 58 1454 2 1.7

1 Simple 1 1527 5.5 1528 3 1.5

19 1 Simple 1 1604.5 4 1605 2.4 1.0

19 3 Simple 3 A 2100 14 indet. 2 1.7

6 Complex 2103.3 6 2105 13 4.5

19 2 Simple 2 2151.3 3.5 2152.6 22 8

4 Post Increase 6 2 1

20 3 Simple 3 1347 i 00 1411.5 9 4

20 6 Complex f 1552 42 1553.5 1200 500

1621.3 1800

4 Post Increase A >7 30 80 --

7 Period Irregular 1634 3 42 1725.5 250 55

Activity

2 Simple 2 2148 11 2152 17 7

21 - Record incomplete bl220 >3 20 1350 10 --

21 3 Simple 3 A 1655 >6 35 1827 10 --

6 Complex f 1701 20 1703.5 59 20

22 6 Complex 1440 7 1442.8 3 1.2

22 3 S imp le 3 1635 1 15 indet. 5 3

24 3 Simple 3 f 1730 >6 00 1802 16 ■"

25 6 Complex 1224 4 1224.8 7 3

25 3 Simple 3 f 1355 12 1357.5 5 2.5

25 2 Simple 2 f 2239.5 4 2241.5 13 8

4 Post Increase >20 5 -- Interference

26 2 Simple 2 1947 5 1947.8 45 10

27 3 Simple 3 2308 14 2314 3.5 1.5

28 3 Simple 3 A f 1158 8 35 1228 5.5 3

3 Simple 3 A 1642 2 30 1752 10 6

2 Simple 2 1649 5 1650 8 3

28 1 Simple 1 2223 1 2223.5 5 2

29 3 Simple 3 A f 1430 4 15 1647 7 3

2 Simple 2 f 1642.2 3 1643.7 35 12

29 3 Simple 3 A 1953 1 00 indet. -- Interference present

29 2 Simple 2 f 1955 2.5 1956 14 6

30 3 Simple 3 A 1617 50 1630.7 3.6 1.8

6 Complex 1624 6.7 1625 7 3

30 1 S imp le 1 2207 1 2207.2 5.5 2

COMMERCE STANDARDS - BOULDER

SO

LA

R

RA

DIO

EM

ISS

ION

INT

ER

FE

RO

ME

TR

IC

OB

SE

RV

AT

ION

S

IVb

u s O' 'O

M,

O <D

LO CM

O

CM

CO

O

lO

u LJ

IVc


OUTSTANDING OCCURRENCES

JULY 1961

BOULDER 108 Me.

July 1961

Type Start UT

Time of Maximum

UT

Duration Minutes

Intensity

6 3 1709.0 1709.2 1.0 2 7 3 1309.2 1310.0 0.8 3 8 3 1234.0 1235.0 2.6 2 8 3 1259.5 1300.0 1.0 2 8 3 1357.0 1357.6 1.0 3

11 2 1544.0 1548.0 9.0 1 11 9 1654.0 1750 554 3 12 6 1146 861 D 3 13 6 1147 860 D 3 14 6 1148 145 D 1

15 7 0030 90 2 15 8 1436.0 1437.8 4.0 2 15 9 1505 1615 220 3 16 3 1233.5 1235.0 1.5 2 17 6 1150 160 D 1

18 3 1213.5 1213.8 1.3 3 18 3 1616.0 1616.9 2.9 2 20 9A 1557.0 1559.0 7.2 3 20 9B 1605.2 1608.0 12.5 3 20 3 1749.0 1750.2 2.0 3

20 8 1757.0 1758.0 4.0 3 20 3 2006.5 2007.4 1.3 2

COMMERCE - 3TANDAR0S - BOULDER

July 1961

Type Start UT

Time of Maximum

UT

Duration Minutes

Intensity

1 3 1601.0 1601.9 1.2 2 1 3 2120.7 2121.3 2.3 2 2 3 1648.2 1649.0 1.3 3 2 3 1706.0 1706.9 1.1 3 2 3 1711.0 1712.5 1. 7 3

2 3 1824.0 1824.2 1.0 3 3 3 1521.0 1521.9 1.3 3 3 2 1542.2 1543.3 3.2 2 3 3 1630.0 1630.8 1.0 2 3 3 1658.0 1658.5 0.7 3

3 3 1704.3 1705.0 1.0 3 3 3 1916.2 1916.7 1.0 3 4 6 1141 145 D 2 4 3 1832.3 1833.0 1.3 2 5 3 0137.0 0138.0 1.3 3

5 6 1142 90 D 1 6 6 1142 115 D 1 6 3 1459.4 1500.1 0.7 3 6 3 1514.4 1515.0 0.7 3 6 3 1529.5 1530.5 0.7 3

NOMINAL TIMES OF OBSERVATION

JULY 1961

BOULDER 108 MC

July 1961

U.T. July 1961

U.T.

1 1140-0210 I 1955-2050; 10 1145-0208 I 1645-0208 2224-0210 11 1145-0208

2 1140-0210 12 1146-0207 3 1141-0209 13 1147-0207 4 1141-0209 I 1850-0045 14 1148-0207 I 1700-0000 5 1142-0209 I 1650-2340 15 1148-0207 I 1715-0207 6 1142-0209 I 2220-2315; 16 1149-0206 I 1840-0030

0030-0125; 17 1150-1510; I 2030-0000 0200-0209 2030-0206

7 1143-0208 I 1805-0208 18 1151-0205 I 2030-2230 8 1144-0208 I 1830-0208 19 1152-0204 I 2000-0020 9 1144-0208 I 1900-2225 20 1152-0204 I 2030-0145


Note: No record July 21 through 31 because of equipment difficulties. I = interference.

IVd


SPECTRUM OBSERVATIONS

Fort Davis APRIL-JUNE 1961

25-580,2100-3900 Me

IMPORTANT BURSTS

1961 REMARKS

TYPE TIMES INT RANGE U.T MG

April 1 0000-0050

1322-2400

2 0000-0050 1320-2400

3 0000-0050 1320-2400

4 0000-0050 IV 1421-1424 2 580-260 1321-2400 IV 2234.5-2320 2 580-90

Unci 2239.8-2245 2 130-50 2239.8 Unci, has harmonic but no drift.

5 0000-0050 IV 1625-1628 2 580-280 1322-2400 III G 1904-1905 2 580-25

IV 2056.7-2105 1-3 3000-125 Unc 1. 2059.7-2108 2 150-25 2059.7 Unci, has harmonic.

6 0000-0100 IV 0013-0019 2-3 580-150 1300-2400 II 0015.0-0021 3 200-40

III G 1536-1540 2 260-25

7 1300-2400

8 0000-0100 1300-2308

Weak I throughout day.

9 1300-2400

10 0000-0105 1300-2400

11 1300-2400

12 1300-2400

13 1300-2400

14 1300-2400 III G 2113-2116 2 580-25

15 1300-2400

16 1300-2400

17 1300-2400 III G 2341-2342 2 180-50

18 1300-2400 Weak I throughout day

19 1300-2400 III G 1746-1750 1-3 200-25 Weak I throughout day.

20 1300-2400 Weak I throughout day.

21 1300-2400

22 1300-2400

23 1300-2400

24 1300-2400

25 1300-1523 1541-2400

26 1300-2400

27 1300-2400

28 1300-2400

29 1300-2231

30 1240-1415 1523-2400

May 1 0000-0010

1242-2400

2 1241-2400

3 1242-2400

4 1242-2400 IV 2207.5-2210 2 3900-2100



SPECTRUM OBSERVATIONS

IVc

Fort Davis APR1L-JUNE 1961

25-580, 2100-3900 Me

1961 OBSERVING HOURS IMPORTANT BURSTS

REMARKS

TYPE TIMES INT RANGE U.T MG

May

5 1242-2400 III C 1929-1930 3 250-25

III G 2230-2232 1-3 300-25 Weak I throughout day.

6 1240-2400 Unci. 2219-2221 1- 100-60

7 1240-2400

8 1241-2400

9 1240-2400

10 1240-2400

11 1240-2400 Ill G 1750-1753 2 580-400

III G 1757-1808 1-3 580-25

12 1240-2400 III G 1850-1852 2 180-25

III G 2247-2249 1-2 580-125

III G 2305-2306 3 220-25

III G 2309-2310 2 300-25

III G 2348-2350 2 500-50

III G 2359 3 320-25

13 0000-0002

1240-2400

III G 0001 3 320-25

14 1240-2400

15 1241-2400

16 1241-2305

17 1240-2400

18 1241-2400

19 1240-2400

20 1240-2400 III G 1949-1951 3 250-25 Weak I throughout day.

21 1225-2400

22 1225-2400

23 1225-2400

24 1225-2400

25 1225-2400 III G 2144-2146 2 500-180

26 1225-2400

27 1225-2400

28 1225-2400

29 1225-2400

30 1225-2400

31 1226-2400

June

1 1225-2400

2 1225-2400


4 1225-2400

5 1225-2400 Unci. 1523-1531 1- 580-125

6 1225-2400


8 1225-2400

9 1225-2400 Unci. 2136-2144 2 240-25 2135: Unci, resembles Type II.


IVf

SOLAR RADIO EMISSION SPECTRUM OBSERVATIONS

Fort Davis APR1L-JUNE 1961

25-580,2100-3900 Me

1961 IMPORTANT BURSTS

FREQUENCY

RANGE

MC

REMARKS

TYPE TIMES U.T

INT

June 10 1225-2400

11 1225-2400 III G 1503-1507 1-3+ 580-25 IV 1505-1526 1-3 3000-100 IT 1507.5-1515 2 150-50

12 1225-2400

13 0000-0148 III G 0125-0128 1-3 300-100 1225-2400 III G 2035-2037 2 280-25

14 0013-0148 III G 1235- 1237 2 350-75

1225-2400 III G 1613-1615 2 420-25

T 11 C 1627-1631 2-3 420-25

II 1634.2-1638 1 140-45

III G 1730-1731 3 580-25

III G 2332-2334 2 500-50

III G 2355-2359 2 580-100

15 0000-0148 III C 1322-1323 1-2 200-25

1210-2400 III G 1324-1325 2-3 300-50

III G 1401-1403 1-2 280-25

III G 1455-1456 1-3+ 580-25

III G 1552-1554 2 220-25

III G 1635-1646 1-3+ 3900-25

II 1646.3-1701 2 150-25

III G 1702-1712 1-3+ 490-25

III G 1718-1720 3+ 580-25

III G 1721-1722 1 580-125 Weak I throughout day

II 1722.7-1727 2 200-50

III G 1842-1843 2 250-25

III G 2103-2109 1-3+ 500-25

III G 2112-2113 2 280-25

III G 2202-2204 2-3 3000-25

III G 2205-2208 1-3 350-25

16 0000-0148 III G 0042-0043 2-3 240-25 Weak I throughout day.

1210-2400


1210-2400


1210-2400


1210-2400 III G 1919-1920 2 280-25

20 0000-0150 I 1210-2400 1 320-100

1210-2400

21 0000-0150 I 0000-0150 1 320-100 Weak I throughout day.

1210-2400

22 0000-0150 I 1210-2400 1 320-100

1210-2400

23 0000-0150 I 0000-0150 1-2 320-100 Weak I throughout day.

1215-2400


1210-2400


1210-2400

26 0000-0150

1210-2400

27 1210-2400

28 1210-2400 III G 1443-1445 2 400-240

III G 1945-1946 2 580-180

III G 2052-2055 1-2 580-170

29 1210-2400 III G 1317-1319 2 300-25 Unci. 2005-2007 2 50-30

30 0000-0155

1210-2400


Va

DEEP RIVER NEUTRON MONITOR

SOLAR INJECTION OF JULY 18, 1961

Hr s. Minutes at start of interval U.T. 00 05 10 15 20 25 30 35 40 45 50 55

00 216 219 213 217 218 215 221 215 216 217 217 218 01 216 218 213 217 217 217 220 214 214 213 217 215 02 212 213 217 217 215 217 214 215 217 216 211 213 03 216 215 213 216 215 214 214 215 216 213 212 217 04 216 219 216 217 216 219 221 216 212 216 213 219 05 212 217 216 216 216 217 212 215 217 215 217 215

06 219 217 210 210 215 212 213 213 210 214 212 211 07 210 213 210 211 211 209 209 209 210 212 210 212 08 210 212 209 213 215 209 210 211 212 212 208 211 09 209 212 210 212 211 209 210 215 209 214 209 208 10 212 213 211 214 221 220 215 225 225 232 231 227 11 227 230 235 237 237 233 233 237 237 238 237 236

12 236 233 236 233 232 231 231 230 232 229 230 231 13 228 231 229 235 228 231 232 232 231 230 232 230 14 230 229 233 228 227 228 230 225 229 227 225 226 15 225 225 226 228 224 221 223 223 226 225 225 225 16 222 225 227 226 221 226 220 222 219 224 221 221 17 219 219 221 219 225 221 221 222 218 216 222 220

18 220 217 222 219 220 220 218 220 221 216 215 214 19 220 221 222 217 215 212 216 216 216 212 217 211 20 215 215 212 215 215 207 210 209 211 209 211 208 21 207 211 208 212 210 207 208 209 209 210 206 210 22 209 211 210 211 210 206 210 211 208 203 207 204 23 210 204 206 210 205 209 201 205 207 210 211 205

SOLAR INJECTION OF JULY 20, 1961

Hrs. Minutes at start of interval

U.T. 00 05 10 15 20 25 30 35 40 45 50 55

10 212 208 209 215 214 208 209 212 210 211 216 211 11 212 216 206 207 210 209 207 210 205 214 210 209

12 207 207 210 212 211 210 208 211 215 207 211 208 13 206 210 208 211 210 205 212 208 208 210 208 213 14 209 210 206 207 209 211 208 209 206 208 209 207 15 208 210 209 208 206 209 206 208 207 205 208 208 16 209 207 212 210 217 220 219 215 218 215 216 218 17 213 214 215 217 213 214 214 213 216 216 210 210

18 211 211 213 209 210 212 211 207 212 211 210 211 19 207 212 210 212 209 211 211 213 211 212 209 212 20 217 209 208 210 211 212 206 209 211 212 211 210 21 213 210 214 210 212 213 208 208 206 215 213 208 22 211 210 209 211 215 210 213 209 210 209 211 213 23 210 212 209 208 210 213 213 208 210 210 207 217

Five minute readings, corrected for pressure

Scaling factor 100


Vb


COSMIC RAY INDICES

(Climax Neutron Monitor)

JUNE 1961

June 1961

Daily average

counts/hr.

June 1961

Daily average

counts/hr.

1 3012.2 16 2994.0

2 2999.7 17 2990.1

3 2999.5 18 2984.9

4 3004.8 19 2996.2

5 3023.0 (10)* 20 2979.8

6 2999.6 21 2983.2 (38)

7 2976.6 (33) 22 2994.0 (30)

8 2990.1 23 2999.6 (29)

9 2991.2 24 3010.3

10 2989.0 25 3014.1

11 2984.5 26 3015.6

12 2985.7 27 3041.8

13 2994.1 28 3018.9

14 3007.7 29 3007.8

15 2989.2 30 3007.2

COMMERCE - STANDARDS - BOULOER

-'Number of hours in average.

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GEOMAGNETIC ACTIVITY INDICES

JUNE 1961

June 1961

C

Values Kp Sura Ap

Final

Selected

Days

Three hour Gr. interval

12 3^ 5678

1 1.3 3 0 3o 3o 5- 6- 5+ 3+ 3o 3 lo 30 Five

2 1.3 4- 2+ 4- 5- 5- 5- 5o lo 30- 28 Quiet

3 0.6 2+ 4- 3+ 3o 1+ lo 1- 2- 17o 10

4 0.4 2- 2+ 3- 2+ 3o 1+ 1- 1+ 15+ 8 10

5 0.4 1+ 3o 3- 2+ 1+ 2o 2+ 2o 17o 9 11

13 6 1.0 2- 2- 3- 1+ 2+ 5+ 4o 3o 22o 17 28

7 1.1 2o 3- 4- 4+ 5o 4- 4o 3+ 29- 24 30 8 1.0 4o 3+ 3+ 3o 3+ 3- 3- 3- 25o 16

9 0.3 1- lo 2o 2o 1+ 2o 2+ 2o 13+ 6 10 0.1 1+ 1+ 2- 1+ 2o 0+ Oo Oo 80 4

11 0.0 0+ 1- 0+ 0+ 1- 1- lo Oo 4o 2 Five

12 0.6 lo 4- 3- 2o 2o 2o 1- 0+ 14+ 8 Disturbed

13 0.1 0+ 1- 0+ 1+ lo 1- 1- lo 60 3 14 0.2 lo Oo 1- lo 0+ 0+ 1- 3+ 7+ 4 1

15 0.7 2+ 2+ 2o 3+ 3o 3- 2+ 2- 20- 11 2 21

16 0.6 4- 2o 1+ 2+ 2o 3- 3- 2- 18+ 10 22

17 0.3 1+ 2- 0+ 1+ 3- lo 1+ 2o 12- 6 29 18 0.8 1+ 2- 2o 3o 3- 3+ 3+ 4+ 22- 14 19 0.3 2+ 3o 2o 2- lo 1- 2o 2- 14+ 7 20 0.7 2- 2+ 2+ 2- 0+ 2o 3+ 4o 18- 10

21 1.7 5o 5- 4+ 6- 6- 4+ 5o 7o 42- 58 Ten

22 1.6 7- 6- 5- 5o 4o 5o 5+ 5o 42- 58 Quiet

23 0.4 4- 2- lo 1- 2- 3- 2o 2+ 16- 9 24 0.3 2+ 2o lo lo 1+ 1+ 2- 1+ 12o 6 9 25 0.5 2- 2- 1+ 3o 2o 2o 2o 3+ 17o 9 10

11 26 0.4 1+ lo 0+ 0+ 3o 2o 2o 1- 11- 6 13 27 0.4 0+ 2- 3o 3o 3- 1+ 0+ 0+ 13- 7 14 28 0.1 0+ lo 1+ 2- 2- 1+ 1- lo 9o 4 17 29 1.4 3+ 6+ 5- 3+ 3- 2o 2o 2- 26o 25 24 30 0.1 2+ 1+ 1- 0+ 0+ 0+ lo 1+ 8- 4 26

28 30

Mean: 0.62 Mean: 14


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CRPL RADIO PROPAGATION QUALITY FIGURES AND FORECASTS

NORTH ATLANTIC

JUNE 1961

— Short-term forecast I Range of reports

o Quality figure

9 -

7-

5-

3 -

I -

DAY

1 2 3 4

4^t

5 6 7 8 3

¥

10

'W 1 ItSr1 txl 1 1

11

¥

12 3 14

14# 15 16 17 18 19

\$r 10

hjjfl

OUTCOME OF ADVANCED FORECASTS FINAL ESTIMATE

NORTH ATLANTIC DISTURBED

QUIET

ACTUAL

COMPARISON (SEE

NORTH PACIFIC

VII C USEFUL FREQUENCY RANGES- NORTH ATLANTIC PATH

JUNE 1961

20-

10

0-

8 AF[r 20

'—r

OhUT 3 6 9 12 15 18 21 24

—r

0 3


USEFUL FREQUENCY RANGES - NORTH ATLANTIC PATH VII d

JUNE 1961

0 UT 3 9 12 15 18 21 24 Oh UT 3 6 12 15 18 21 24

Villa

ALERT PERIODS AND SPECIAL WORLD INTERVALS

INTERNATIONAL WORLD DAY SERVICE

JULY 1961

Issued

July 1961

Day/Time UT

Advance Geophysical Alert No. World-Wide Geophysical

Alert

Special World Interval

05/0540 Ft. Belvoir, Magnetic Storm 04/20XXZ*

05/1600 125 Magnetic Storm 04/13XXZ

11/1740 McMach, Solar Flare 11/1635Z

12/1600 126 Start (Predicted)

13/1255 Ft. Belvoir, Magnetic Storm 13/1115Z

13/1600** r Magnetic Storm

<-128 Aurora Probable 13/1115Z Continue

13/1605 Chicago, Cosmic Ray Increase 13/11XX

14/1600 129 Continue

15/1600 130 Finish

15/1630 Sacramento Peak, Solar Flare 15/1545Z

16/1600 131 Start (Predicted)

17/1600 132 Continue (Predicted)


18/1345 Minneapolis, Cosmic Ray Increase 18/1100Z

18/1600 133 Magnetic Storm 17/1827Z

Cosmic Ray Increase

18/1100Z Finish

21/1335 Ft. Belvoir, Magnetic Storm 20/16XXZ***

21/1600 134 Magnetic Storm 20/0249Z


27/1230 Ft. Belvoir, Magnetic Storm

Aurora Probable 26/1950Z

27/1600 135 Magnetic Storm Aurora

Probable 26/1930Z Start

28/1600 136 Finish

28/1930 Sacramento Peak, Solar Flare 28/1700Z

*Later judged to have begun 04/13XXZ.

**GEOALERT Issued at 1600Z, July 13, carried two GEOALERT numbers.

***Later judged to have begun 20/0249Z.

solar - geophysical data

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