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PART B

SOLAR - GEOPHYSICAL DATA

ISSUED FEBRUARY 1961

U. S. DEPARTMENT OF COMMERCE NATIONAL BUREAU OF STANDARDS

CENTRAL RADIO PROPAGATION LABORATORY BOULDER, COLORADO

CRPL-F 198

PART B

NATIONAL BUREAU OF STANDARDS CENTRAL RADIO PROPAGATION LABORATORY

BOULDER, COLORADO

Issued 28 Feb. 1961

SOLAR - GEOPHYSICAL DATA

CONTENTS

I DAILY SOLAR INDICES

(a) Relative Sunspot Numbers and 2800 Me Solar Flux, December 1960 - January 1961

(b) Graph of Sunspot Cycle

II SOLAR CENTERS OF ACTIVITY

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

III SOLAR FLARES

(a-b) Optical Observations - January 1961 (c) Flare Patrol Observations - January 1961 (d) Subflares - December 1960 (e-h) Optical Observations - October 1960 (i) Flare Patrol Observations - October 1960 (j) Ionospheric Effects (SWF-SEA-SCNA-Bursts ) - December 1960

IV SOLAR RADIO WAVES

(a) 2800 Me - Outstanding Occurrences (Ottawa) January 1961 (b) 169 Me - Outstanding Occurrences (Nanpay) January 1961 (c-d) 108 Me - Outstanding Occurrences (Boulder) January 1961 (e-i) 25-580 Me - Spectrum Observations (Ft. Davis) April -

June 1960 (j) 450-1000 Me - Spectrum Observations (Owens Valley)

December 1960 - January 1961

V COSMIC RAY INDICES

(a) Climax Neutron Monitor - December 1960 (b) Deep River Neutron Monitor - December 1960

VI GEOMAGNETIC ACTIVITY INDICES

(a) C, Kp, Ap, and Selected Quiet and Disturbed Days, December 1960

(b) Chart of Kp by Solar Rotations - 1960

VII RADIO PROPAGATION QUALITY INDICES

(a) CRPL Quality Figures and Forecasts - North Atlantic and North Pacific - December 1960

(b) Graphs Comparing Forecast and Observed Quality - North Atlantic and North Pacific - December 1960

(c-d) Graphs of Useful Frequency Ranges - December 1960

VIII ALERT PERIODS AND SPECIAL WORLD INTERVALS

(a) Alerts and SWI - January 1961

The descriptive text was published separately, November i960.

Ia DAILY SOLAR INDICES

Jan. 1961

Zurich Provisional Relative Sunspot

Numbers

RZ

Daily Values Solar Flux at 2800 Me, Ottawa, Canada

Flux

1 128 164 2 123 176 3 109 175 4 84 165 5 78 160

6 69 143 7 60 132 8 52 125 9 52 122

10 49 115

11 39 110 12 31 103 13 28 96 14 21 96 15 20 97

16 31 100

17 43 102 18 51 103 19 50 102 20 45 102

21 50 104 22 37 102 23 27 100 24 18 103 25 35 103

26 48 108 27 43 109 28 62 125 29 68 132 30 55 129 31 52 123

Mean: 53.5 120.2

COMMERCE - STANDARDS - BOULDER

Dec. 1960

American Relative Sunspot Numbers

rA'

1 71 2 85

3 74 4 85 5 87

6 73 7 67 8 71 9 80

10 84

11 85 12 74

13 75 14 97

15 100

16 97

17 80 18 71

19 63 20 56

21 60 22 48 23 39 24 43 25 40

26 55 27 65 28 73 29 108 30 106 31 107

Mean: 74.8

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JANUARY 1961

CMP Jan. 1961

Lat McMath Plage Number

Return of

Region

Calcium Plage Data Sunspot Data CMP Area

Values Int. History ,Age

CMP Area

Values Count History

01.1 N17 5983 * 7000 3 £—£ 1 1380 20 £-£ 01.3 S09 5981 5953 1200 3 £-£ 2 100 4 b' \d 02.9 Sll 5985 5955 800 1.5 l \ i 3 03.4 N04 5986 5957 900 2 i — i 3 03.6 N25 5987 5956 600 2 £ —\ d 3

04.4 S12 5988 5958 1000 2.5 £ \ £ 8 05.2 N26 5989 5956 700 1.5 £ — £ 3 05.6 S13 5990 5958 900 2.5 £ — l 8 20 2 06.8 N2 7 5991 5959 5 700 3 £—£ 3 880 21 £-£ 07.9 N32 5994 5959 500 1.5 £ / £ 3

08.8 Sll 5992 596-# 1000 2.5 £—£ 2 10.4 N12 5993 5961 3300 2 £-£ 8 40 1 b /N d 11.5 S14 5995 5960 2600 2.5 £-£ 2 12. 1 Sll 5997 New 1400 3 f,-£ 1 210 4 13.2 N31 5996 5962 400 1 £-£ 8

13.8 S14 5998 5967 1800 2.5 £-£ 6 390 5 b / £

16.2 N30 5999 5966 500 1.5 £-£ 5 17.2 N18 6000 5966 300 1.5 £~\d 5 18.9 S22 6002 5972 200 1.5 £ \ d 3 19.0 S05 6001 New 1400 3 b^£ 1 160 8 b/~\d

20.9 NO 9 6004 5975 500 2 £-£ 3 21.6 N21 6003 5974 700 2 £-£ 4 22.8 S06 6005 New 1200 2.5 £-£ 1 40 3 £ \ d 23.5 N18 6007 5976 2000 2 £-£ 3 25.7 S18 6008 5978 (700) (1) £~^sd 3

25.8 N12 6009 New 1000 2 £/ £ 1 120 3 b/~£

25.8 S09 6010 5978 1300 2.5 £ — £ 3 27.7 S08 6012 5981 200 1 £ \d 3 28.2 N17 6011 5983 4000 2.5 £ \ £ 2 140 1 l~\ d 31.5 N08 .6013 5986 3000 3.5 £-£ 4 500 11 £-£

31.5 N26 6015 •k-k 600 1.5 £-£ 4

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IIIc INTERVALS OF NO FLARE PATROL OBSERVATIONS

OCTOBER I960

HOUR-UT

0 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

Stations Include:

Abastumani Hawaii Krasnaya Pakhra Moscow G. Sacramento Peak

Alma Ata Huancayo Lockheed Nizamiah Simeiz

Anacapri (Swedish) Istanbul McMath-Hulbert Ondrejov Tashkent

Arcetri Kharkov Meudon Pirculi Uccle

Good Hope Kodaikanal Mitaka Royal Greenwich Observatory Voroshilov

Herstmonceux

01 01 01 01 01 01 01 01 01 01 01 01 01 01 01

02 02 02 02 02 02 02 02 02 02 02 02

03 03 03 03 03 03 03 03 03 03 03 03 03 03 03

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06 06 06 06 06 06 06 06 06 06 06 06 06 06

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08 08 06 08 08 08 08 08 08 C-8 08 08 08

09 09 09 09 09 09 09

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SUBFLARES

Noted as follows: Date-Universal Time - Coordinates

DECEMBER 1960

0052 E SI6 £46 1601 N17 E 2 7 1826 N13 E27 1827 N17 E28 1827 N17 £25 1835 N26 E 76 1845 Nil W27 2008 N14 E27 2009 N17 E23 2009 N17 £23 2038 Nil W27 2045 N12 W27 2302 N17 E23 2315 N16 W26 2318 N19 W23

0755 E N14 W29 0821 E N14 W28 0829 E N14 W28 1124 E NO 7 £10 1620 N15 W33 1623 N14 W29 1824 S07 E 13 1826 S10 E13 1840 N19 W34 1904 N19.W33 1904 N I 5 W 36 2258 N08 W42

0807 E N12 W42 0913 E N07 W45 1430 S16 E77 1631 N15 W56 1632 N14 W55 1633 N13 W55 1820 N25 £80 1820 N?5 E80 1820 N25 E80 1820 N2 5 E60 1844 N18 £90 2039 Nil W57 2137 N25 £60 2302 N10 W59 2349 N10 W60

0819 S10 W12 1051 E SO3 W10 1220 E N15 W59 1810 S07 W 1 5 2140 S08 W 1 5

1510 S08 W27 1511 E S09 W23 1725 N26 £55 1726 N27 £57 2021 S17 £90 2035 NOS W68 2050 N17 W30 2139 N04 W69 2245 N09 W80 2328 N15 W77 2354 N26 E54

1533 N07 W80 1552 N07 W80 1615 N26 £45 1615 N24 E49 1617 N25 £39 1625 N24 £48 1759 N06 W85 1820 N25 E40 1850 N06 W85 1851 N06 W85 1858 N12 W90 1902 S07 W44 1918 N06 W85 2025 SOS W43 2028 S05 W44 2030 S09 W44 2102 S06 W46 2136 N 19 W43 2136 N22 W43 2138 NJ7 W44

0030 N20 E51 1814 S09 W58 1917 S13 E 75 1933 Sll W38 1954 S04 WS8 1954 S09 W57 2000 S12 E 18 2014 S10 W37 2028 S09 W57 2030 S13 E 18 2032 E . S08 W58 2032 SI 6 E17 2032 E S13 E19 2154 SI 7 E1V 2158 S19 £18

0044 S05 W61 1555 S09 W49 1700 S03 E 55 1704 S10 W48 1705 S09 V/50 1 8 29 1832 Sr\t W51 1834 S09 W50 1850 N08 W12 1856 N10 W10 1857 NOS W1 2 2004 S04 W51 2005 N09 W62

0124 N07 W53 1719 E S14 £90 1815 N16 E56 1815 N16 £56 1815 N 16 £56 1848 Sll W61 2240 S10 W63

LOCKHEED 13 LOCKHEED 13 LOCKHEED 13

ARCETRI 14 ARCETRI 14 LOCKHEED 14 LOCKHEED 14 LOCKHEED 14 LOCKHEED 14 LOCKHEED 14 LOCKHEED 14

ISTANBUL 15 CLIMAX 15 HAWAII 15 HAWAII 15 HAWAII 15 LOCKHEED 15 LOCKHEED 15

WENDEL 16 WENDEL 16 WENDEL L6 LOCKHEED 16 LOCKHEED 16 LOCKHEED 16 LOCKHEED 16 LOCKHEED 16 LOCKHEED 16 CLIMAX 16 HAWAII 16 LOCKHEED 16 LOCKHEED 16 LOCKHEED 16 LOCKHEED 16 LOCKHEED 16 LOCKHEED 16 LOCKHEED 16 HAWAII 16 LOCKHEED 16

LOCKHEED 17 SAC PEAK 17 LOCKHEED 17 MCMATH 17 LOCKHEED 17 HAWAII 17

WtNDEL 18 CAPRI S 18 LOCKHEED 18 LOCKHEED 18 LOCKHEED 18 LOCKHEED 18 LOCKHEED 18 LOCKHEED 18 LOCKHEED 18 LOCKHEED 16 HAWAII 18 LOCKHEED 18 CLIMAX 18 LOCKHEEO 18 LOCKHEED 18 HAWAII 18

CAPRI S 19 CAPRI S 19 MCMATH 19 SAC PFAK 19 MCMATH 19 HUANCAYO 19 SAC PEAK 19 LOCKHEEO 19 LOCKHEED 19 LOCKHEED 19 SAC PEAK 19 LOCKHEED 19 LOCKHEED 19 SAC PEAK 19 LOCKHEED 19 LOCKHEED 19 SAC PEAK 19 LOCKHEED 19 LOCKHEED 19 LOCKHEED 19 LOCKHEEO 19 SAC PEAK 19 SAC PEAK 19 LOCKHEED 19 LOCKHEED 19 SAC PEAK 19 LOCKHEED 19 LOCKHEED 19 LOCKHEEO 19 LOCKHEED 19

SAC PEAK 20 LOCKHEED 20 SAC PEAK 20 HAWAII 20 HAWAII 20 LOCKHEED 20

HAWAII 21 CAPRI s 21 SAC PFAK 21 SAC PEAK 21 HAWAII 21 MCMATH 21 HAWAII 21

LOCKHEED 22 LOCKHEED 22 SAC PEAK 22 HAWAII 22 HAWAII 22 LOCKHEED 22 SAC PEAK 22 LOCKHEED 22 LOCKHEED 22 LOCKHEED 22

2023 N12 WOT 2142 N12 W04 2235 N12 W04

0842 E SO3 E09 0843 E N15 W20 1618 S05 E03 1837 N14 W15 1646 S05 E03 1909 N14 w 1 5 1957 N13 Wl5 2103 N20 W08

0905 N23 W34 1540 N23 E02 1938 N15 W28 2004 S16 W21 2008 N19 W18 2008 N15 W 17 2349 N17 W 1 7

1224 E N17 W22 1254 £ N18 W25 1313 E N12 E52 1633 E N15 W29 1658 Nil F. 48 1658 Nil E48 1723 N17 W38 1754 Nil E 48 1754 Nil £48 1805 N17 W29 1806 N17 W28 1806 N16 W29 2018 N)2 E45 2055 Nil E45 2113 N13 E45 2114 S16 W23 2114 S16 W23 2144 N10 E45 2152 N09 £47 2224 N27 W79

1614 N13 £31 1721 N14 E 32 1721 N13 E 32 1722 Nil E3? 1852 Nl? £32 2122 Nil £30

0941 E Nil E24 14 37 £ SI 3 Wll 1640 Nil £20 1640 Nil E20 1709 N17 W56 1737 Nil E18 1842 Nil £18 1901 Nil £18 1914 N12 £18 2041 N12 El8 2046 S16 W 19 2131 N12 E 1 7 2132 Nil E18 2148 Nil £17 2208 Nil £18 2304 £ N10 E19

1220 E N12 £10 1223 £ S19 Ell 1527 £ S16 W63 1540 N1S E10 1543 N12 E09 1546 E N12 E10 1554 S14 W27 1623 S16 W65 1623 S16 W65 1655 S14 W 30 1657 S12 W3 1 1723 S14 W28 1729 S16 W65 1731 S14 W27 1833 S14 W28 1840 S15 W67 1845 S14 W28 1935 S14 W67 2010 S14 W67 2010 S14 W67 2010 SI 4 W67 2021 SI 2 W29 2119 SI 2 W30 2119 SI4 W30 2143 S14 W30 2143 S12 W30 2210 S14 W67 2331 S21 £09 2334 S14 W67 2359 S14 W32

1653 S19 WO2 1655 S16 W01 1958 S21 W03 2012 E S24 W04 2032 N13 W06 2213 S14 W85

0140 S22 W06 1334 £ S22 Wll 1515 S16 W90 1629 S16 W90 1840 S14 W90 1842 E SOS W90 2236 S18 W15

1753 S21 W27 2856 S20 W28 1857 SI 8 W26 1908 E S20 W27 1926 S20 W28 1927 S20 W28 1934 SI 8 W26 2032 S20 W28 2201 S19 W29 2249 S19 W28

1724 N08 E39

2308 S09 Ell LOCKHEED LOCKHEED HAWAII

23 1644 23 2129 23 2132

Nil E43 N 1 7 E42 N16 £44

1754 S08 W01 2043 N16 E14 2050 N17 E20 2232 N07 W55 2317 S07 W04

WENDEL 24 LOCKHEED 24 HAWAII 24 LOCKHEED 24

1100 E S22 W56 1624 N12 E90 1914 Nl7 £37 2137 S21 W62

LOCKHEED 25 LOCKHEED 25 LOCKHEED 25 LOCKHEED 25 LOCKHEED 25 LOCKHEED 25 LOCKHEED 25

1852 N17 E87 1852 N17 E87 2039 N17 E87 2128 N20 £86 2128 N20 £86 2245 N17 E87 2324 N17 E87

WENDEL 26 WENDEL 26 ARCETRI 26 ONDREJOV 26 WENDEL 26 LOCKHEED 26 LOCKHEED 26 LOCKHEED 26 LOCKHEED 26 SAC PEAK 26 LOCKHEED 26 LOCKHEED 26 LOCKHEED 26 LOCKHEED 26

0839 £ Nl3 £75 0844 E N17 E 70 0938 E N15 E70 1058 N15 E70 1433 E N14 E 7 1 1624 N15 £70 lb40 N18 £76 1 737 N18 E 7fc 1819 N14 E67 1822 N20 E30 1902 N15 E 70 1936 S10 E46 2105 Nl7 £70 2208 N20 EOO

HAWAII MCMATH MCMATH SAC PEAK MCMATH LOCKHEED LOCKHEED HAWAI I SAC PEAK LOCKHEED LOCKHEED LOCKHEED HAWAI I LOCKHEED HAWAII

27 0136 27 1434 27 1536 27 1732 27 1733 27 2021 27 2037 27 2038 27 2039 27 2046 27 2124 27 2141 27 2142 27 2211 27 2230

N20 E02 N13 c 57 HI 3 E 56 N 1 5 £53 N 1 3 £55 Nl8 E57 N15 £51 Nil E52 Nl5 C 53 N18 E 57 N19 E57 N 1 8 £56 Nl 3 E49 N15 E50 S07 E 37

CAPRI S LOCKHEED LOCKHEED LOCKHEED LOCKHEED

28 1430 E N17 £41 28 1814 N16 E44 28 1842 Nl7 £42 28 2129 N14 E43 28 2356 N20 t42

HAWAII 29 LOCARNO 29 LOCARNO 29 SAC PEAK 29 SAC PEAK 29 LOCKHEED 29 LOCKHEED 29 LOCKHEEO 29 CLIMAX 2) HUANCAYO 29 LOCKHEED 29 LOCKHEED 29 LOCKHEED 29 LOCKHEED 29 CLIMAX 29 LOCKHEED 29 LOCKHEED 29

0138 E S03 W18 1247 N18 E37 1338 N18 £37 1534 N21 635 1540 SC6 £37 1612 N17 E 32 1935 SI 3 £70 1945 N20 £32 1946 N20 E 34 1950 E N26 £35 2010 N16 E29 2059 Nl6 £30 2218 S07 E 33 2224 N 18 £26 2225 N22 E33 2253 N16 £28 2329 Nl6 E 28

WENDEL 30 WENDEL 30 WENDEL 30 WENDEL 30 WENDEL 30 LOCKHEED 30 CLIMAX 30 CLIMAX 30 LOCKHEED 30 LOCKHEED 30 LOCKHEED 30 LOCKHEED 30 LOCKHEED 30 LOCKHEED 30 LOCKHEED 30 LOCKHEED 30 LOCKHEED 30 LOCKHEED 30 LOCKHEED 30 LOCKHEED 30

1125 E N18 £23 1158 E N14 £28 1214 E N14 E28 1232 E N17 E24 1436 E N14 E27 1659 N19 E21 1726 S12 E45 1740 S17 £58 1742 SI 7 E 56 1806 N17 £18 1900 N17 E 1 7 1943 N09 W23 1946 N16 E 1 6 2009 N18 £15 2009 N18 E 1 5 2018 N09 W23 2055 N18 E 15 2055 N09 W23 2130 N18 £15 2248 N17 E16

31 1020 E N16 E08 31 1356

CAPRI S CAPRI S LOCARNO LOCARNO SAC PEAK LOCKHEED LOCKHEED LOCKHEED LOCKHEED SAC PEAK LOCKHEED LOCKHEED SAC PEAK LOCKHEED LOCKHEED SAC PEAK LOCKHEED LOCKHEED LOCKHEED LOCKHEED LOCKHEED LOCKHEED

31 1445 31 1500 31 1544 31 1612 31 1640 31 1646 31 1724 31 1725 31 1843 31 2000 31 2008 31 2009 31 2145 31 2145 31 2158 31 2205 31 2205 31 2258 31 2338 31 2352

N14 £05 N16 E06 N20 E02 N17 E02 N09 W36 N 14 E02 N14 E02 N20 £02 N09 W36 N10 W 35 N20 E02 Nl 7 E01 N1 7 E01 N20 E02 N18 £02 N09 W38 S14 £64 N18 E02 N18 E01 N 1 8 W01

l^Kirtance 2 l by other observatories. (See CRPL-F 197 Part B for January 19641.

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INTERVALS OF NO FLARE PATROL OBSERVATIONS

JANUARY 1961

HOUR-UT

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

Stations Inc lude:

Anacapri

Arcetri

Climax U u.i nil

(Swedish) Istanbul

Lockheed

McMath-Hulbert

DnHrp\ov

Royal Greenwich Observatory

Herstmonceux

Sacramento Peak

Ucc le

IONOSPHERIC EFFECTS OF SOLAR FLARES Illj

(SHORT-WAVE RADIO FADEOUTS)

DECEMBER i960

Dec.

1960

Start

UT

End

UT

Type Wide

Spread

Index

Impor¬

tance

Observation Stations Known

Flare, UT

CRFL-F 197

5 1830 2010 S-SWF 5 3 AN, BE, BO, FM, HU, LA, MC, PA, PR, WS 1825

7 2112 2210 G-SWF 5 1+ AD, BE, FM, HU, MC, PR, WS

16 1530 1605 Slow S-SWF 3 1+ HU, MC, PR 1517

30 0330 0520 S-SWF 1 2+ OK

COMMERCE - STANDARDS - BOULDER

LA = Los Angeles, California

PA = Paramaribo, Surinam

IONOSPHERIC EFFECTS OF SOLAR FLARES

(Sudden Cosmic Noise Absorption \ Sudden Enhancements Of Atmospherics ] Solar Noise Bursts At 18 Me. /

DECEMBER 1960

Dec.

1960 SCN A

CLASS

SEA Burst

WIDESIREAD

INDEX (UN BEGIN

TIME IVERSAL TIME)

MAX. END

PERCENT ABSORPTION

SCN A OBSERVATION STATIONS

* ! 5 2+ 5 1835 1850 1945 Al, A3, A5, A7, A10, BO

1 5 3 5 1835 1845 2000 70 BO, MC, RE, SP

15 3+ 1 1814 1922 2022 91 RE

* 20 1+ 2 1856 1902 1920 A5, A10

20 2 1 2343 2352 HA

25 1 1 0436 0445 045 7 TY

27 1 1 2312 2314 HA

27 1 5 2325 2329 BO, HA

28 1 5 2340 2341 BO, HA

30 1 1 0430 0442 0453 TY

30 2 1 0600 0606 0642 TY

CMMRCt - STANDARDS - BOULOCR

TY = Research Institute of Atmospherics, Toyokawa, Japan.

* = Sudden Enhancement of Signal from 18 kc (NBA-Panama Canal Zone)

observed by A5.

Sudden Phase Anomaly of 18 kc (NBA) Equipment not operating at

Boulder, Colorado during December.

IVa SOLAR RADIO EMISSION

OUTSTANDING OCCURRENCES

JANUARY 1961

OTTAWA 2800 MC

Jan.

1961

Type* Start UT Duration

Hr3:Mins

Maxim’ r.i Remarks

Time UT peak

Flux

4 2 S imp le 2 f 1710 9 1711 40

4 Post Increase 2 10 17

5 2 Simple 2 1345 9 1348.3 30

27 1 Simple 1 1421 3 1422.2 5

28 1 Simple 1 f 1656 5 1657.8 7

4 Post Increase 15 2

29 3 Simple 3 f 1452 2 04 1527 8

30 2 Simple 2 f 1423.8 7 1424.7 160

30 2 Simple 2 f 2003 3 2004.3 70

31 2 Simple 2 f 1511.5 5 1514.3 350

4 Post Increase 10 2

31 1 Simple 1 2109.5 4 2110.5 5

31 2 Simple 2 2133.5 5.5 2135 14

COfcRCRCE - STANDARDS BOULDER

SO

LA

R

RA

DIO

EM

ISS

ION

INT

ER

FE

RO

ME

TR

IC

OB

SE

RV

AT

ION

S

IVb

JAN

UA

RY

1961

IVc SOLAR RADIO EMISSION

OUTSTANDING OCCURRENCES

JANUARY BOULDER

Jan.

1961

Type Start

UT

Time of

Maximum

UT

Duration

Minutes

Intensity

1 3 1741.0 1741.6 0.6 2

2 3 1437.0 1437.2 0.3 2

2 3 1747.1 1747.5 0.4 2

2 2 2202.5 2203.7 2.5 1

2 3 2216.0 2216.3 1.0 2

2 3 2229.1 2229.5 0.6 3

2 2 2245.5 2246.5 1.5 2

2 2 2253.0 2255.0 2.0 2

3 3 1452.0 1452.3 0.5 1

3 3 2007.6 2008.0 0.5 2

3 3 2249.0 2249.5 0.6 3

4 3 1727.4 1728.0 1.8 2

4 3 1843.2 1843.5 0.4 2

5 3 2219.2 2219.9 0.5 3

6 3 2258.5 2258.8 0.3 2

7 3 1838.3 1838.5 0.3 2

9 3 2255.2 2255.5 0.3 1

10 7 1851 1913.0 35 1

10 3 2022.6 2023.2 0.5 3

10 3 2259.0 2259.5 0.3 2

11 3 1652.5 1653.2 0.9 2

11 3 1826.3 1826.6 0.5 2

11 3 1847.0 1847.3 0.5 2

11 3 2235.7 2236.1 0.5 2

11 3 2241.3 2241.4 0.5 2

11 3 2319.3 2319.6 0.3 2

12 3 2234.7 2235.2 0.5 3

12 3 2304.5 2305.0 0.6 2

13 3 1606.1 1606.5 0.5 2

13 2 1842.5 1852.7 11 1

13 3 2226.8 .2227.1 0.4 2

14 3 2213.1 2213.5 0.4 2

16 3 1917.2 1917.6 0.5 2

17 3 1706.7 1706.8 0.3 2

18 3 1447.0 1447.5 0.4 2

18 3 1847.5 1850.0 0.6 2

18 3 2033.5 2034.5 1.9 1

19 3 2226.6 2227.0 0.4 3

20 3 1711.5 1711.8 0.5 1

20 3 2110.3 2110.9 0.8 1

Jan.

1961

Type Start

UT

Time of

Maximum

UT

Duration

Minutes Intensity

21 3 1954.8 1955.1 0.3 2

22 3 1751.0 1751.2 0.3 2

22 3 2203.0 2203.6 0.6 1 22 3 2332.5 2332.9 0.8 2

23 3 2235.6 2236.0 0.4 2

24 3 2006.2 2006.6 0.4 2

26 7 22 30 80 D 2

27 3 1648.0 1649.2 2.0 2

27 9a 1731.0 1732.5 5 2

27 9b 1736.0 1739.0 5 3

27 3 2202.0 2202.7 1.0 2

28 3 1520.2 1520.6 0.4 2

28 7 1538 105 I

28 3 1730.1 1730.8 1.4 2

28 3 1920.5 1921.2 2.3 2

28 3 1937.2 1938.0 0.8 2

28 2 2042.6 2047.0 14 2

28 2 2112.5 2122.0 12 2

28 8 2246.8 2249.0 1.7 3

28 2 2345.0 2345.8 4.2 2

29 2 1445.5 1454.6 15 3

29 7 1548 E 98 1

29 8 1846.4 1848.0 5 3

29 3 2028.3 2028.8 0.5 2

29 2 2122.8 2134.9 15 3

29 7 2145 2153.1 107 1

30 6 1412 E 1508 576 D 2

30 8 1424.0 1425.5 2.0 3

30 9 1426.0 1428.0 3.5 3

31 8 1512.0 1513.2 2.6 2

31 3 1517.0 1518.3 0.6 3

31 3 2044.8 2044.9 0.7 3

31 3 2131.0 2131.9 1.5 2

31 8 2133.0 2135.5 3.0 3

STANDARDS BOULDER

IVc!

NOMINAL TIMES OF OBSERVATION

BOULDER 108 MC

Jan. 1961

U.T. Jan.

1961

U.T.

1 1428-2329 17 1425-2346 2 1428-2330 18 1425-2347 3 1428-2331 19 1424-2349 4 1428-2332 20 1424-2350 5 1428-2333 21 1423-2351 6 1428-2335 22 1423-2352 7 1428-2337 23 1422-2353 8 1428-2338 24 1422-2354 9 1428-1553; 25 1421-1955

1748-2338 26 2208-2357 10 1428-2339 27 1625-1827; 11 1428-2340 1830-2108; 12 1427-2341 2115-2358 13 1427-2342 28 1419-2359 14 1427-2343 29 1418-0000 15 1426-1715; 30 1417-0002

1744-2344 31 1416-0003 16 1426-1618;

1655-2345

COMMERCE - STANDARDS - •OUUOCR

IVe SOLAR RADIO EMISSION

SPECTRUM OBSERVATIONS

Fort Davis

APRIL 1960

25-580 Me.

Important Bursts Frequency

Date

1960

Observing Hours Type Times U.T. Int. Range Remarks

Apr. 1 0000-0050 III G 1416-1420 2 500-25 Many III throughout day

1320-2400 III G 1659-1702 3 150-25 100-25 Mc/s

III G 1704-1705 3 580-25

III G 1839-1842 3+ 220-25

III G 21 14-2116 3+ 580-25

Apr. 2 0000-0050 III G 0014-0018 3 580-25 Weak I and Many III

1320-2400 III G 1456-1503 2 75-25 throughout day

III G 1629-1641 2-3+ 450-25

III G 1716-1718 3 320-25

III G 1730-1731 2 320-25

III G 1826-1836 2-3 450-25

III G 2033-2040 3 400-25

III G 2135-2136 3 580-25

III G 2356-2358 3 580-25

Apr. 3 0000-0055 III G 1322-1325 2 560-50 1558: Reverse slopes

1320-2400 III G 1558-1602 3 400-25 400-200 Mc/s

III G 1754-1756 3 500-25

III G 1759-1800 3 400-320

fill G 2057-2140 2 100-60 Weak I and Many III

t 1 throughout day

Apr. 4 0000-0055 III G 1531-1533 1 280-50

1320-2400 III G 1539-1540 1 400-25 Weak I and Many III

III G 2118-2120 1 420-100 throughout day

Apr. 5 0000-0055

1320-2400

III G 0016-0019 3 300-30

Apr. 6 0000-0100

1527-2400

Apr. 7 0000-0100 III G 1756-1757 3 240-25 1756: Reverse slopes.

1320-2400 III G 2125-2127 3 200-25 200-125 Mc/s

Apr. 8 0000-0100

1320-2400

Apr. 9 0000-0100 III G 1518-1520 3 580-25

1320-2400 III G 1850-1852 3 200-30

Apr.10 0000-0100 III G 1758-1759 2 580-100 1758: Reverse slopes

1320-2400 III G 2025-2026 1 280-60 /v300 Mc/s

III G 2159-2200 1 240-25

IV 2323-2328 2 580-160

Apr.11 0000-0105 III G 1338-1340 3 200-25

1320-2400 III G 1411-1414 2 240-40

Apr.12 0000-0105

1320-2400

Apr.13 0000-0105

1320-2400

Apr.14 0000-0110

1320-2400

Apr.15 0000-0110

1320-2400

Apr.16 0000-0115 III G 1526-1527 2 580-400 1526: Reverse slopes

1320-2400 400-500 Mc/s

Apr.17 0000-0115

1320-2400 in g 0042-0044 1 580-400

Apr. 18 0000-0115

1300-2400

STANDARDS 0OULDER

SOLAR RADIO EMISSION


IVf

Fort Davis APRIL -MAY 1960

25-580 Me.

Important Bursts Frequency Date 1960

Observing Hour Type Times U.T. Int. Range Remarks

Apr.19 0000-0115 1300-2400

III G 1722-1724 1-2 150-25

Apr.20 0000-0115 1300-2400

III G 2134-2135 1 420-280

Apr.21 0000-0120 1300-2400

Apr.22 0000-0120 1300-2400

Apr.23 0000-0120 1300-2400 Weak I throughout day

Apr.24 0000-0120 I 0000-0120 1 200-100 1300-2400 I 1300-2400 1-2 320-50

III G 1400-1401 1 350-25 III G 1609-1613 2 150-25

Apr.25 0000-0120 1300-2400

I 0000-0120 2 580-50 Continue with I

Apr.26 0000-0120 1300-2400

Apr.27 0000-0120 1250-2400 ■%

Apr.28 0000-0130 III G 0117-0119 1 500-150 1250-2400 II 0122.1-0130 3 180-35

Apr.29 0000-0130 1250-2400

Weak I after 2200

Apr.30 0000-0130 1250-2400

I 1250-2400 1 300-50

May 1 0000-0130 I 1250-^2100 1-2 300-100 0000-0130 Weak I 1250-2400 III G 1748-1749 2 350-25

III G 1750-1753 2 560-25

May 2 0000-0130 1250-2400

III G 2357-2358 2 580-25 Weak I throughout day

May 3 0000-0130 1250-2400

I 1250-2000 1 280-100

May 4 0000-0135 1250-2400

III G 1611-1614 2 320-25

May 5 0000-0136 1250-2400

May 6 0000-0135 IV 1414-1612 1-3 580-50 1250-2400 II 1438.2-1445 3 90-25

I /v1700-a/1900 2 320-90 May 7 0000-0135

1250-2400

May 8 0000-0135 1250-2400

May 9 0000-0135 1250-2400

III G 2347.3-2350 2 320-25

May 10 0000-0135 1528-2400

May 11 0000-0135 1250-2400

May 12 0000-0135 1250-2400

III G 1447-1449 3 420-25

•TAMpAftDS BOULDER

IVg SOLAR RADIO EMISSION


Fort Davis

MAY 1960

25 -580 Me.

Date

1960

Observing Houre Type

Important Bursts

Times U.T. Int.

Frequency

Range Remarks

May 13 0000-0135 III G 1542-1545 2 200-25

1250-2400 III G 1555-1557 2 350-25

III G 1618-1620 3 560-25

III G 2153-2200 2 350-25

May 14 0000-0135 I 0000-0135 1 280-120

1250-2400 III G 1330-1333 2 580-25

III G 1434-1437 2 580-25

III G 1823-1829 3 580-25

III G 2035-2041 2 580-25

III G 2313-2316 2 450-25

May 15 0000-0135 III G 1459-1500 2 580-25

1250-2400 III G 1518-1524 3 480-25

III G 1944-1949 3 580-25

III G 1951-1952 3 580-25

III G 2131-2132 2 170-25

III G 2308-2310 2 580-25

III G 2318-2321 2 580-25

May 16 0000-0135 III G 1250-1252 1 320-25

1250-2400

May 17 0000-0135 II 1742.7-1752 3 150-25

1250-2400 IV 1755-1829 1-2 60-25

May 18 0000-0119 III G 1751-1756 3 240-25

1615-2400 III G 2102-2107 2 400-25

May 19 0000-0140 III G 1612-1614 3+ 400-25 1250-2400 III G 1915-1921 3+ 320-25

III G 1959-2001 3 150-25

III G 2005-2009 3 450-25

III G 2247-2252 2 150-25

III G 2253-2256 3 420-25

May 20 0000-0140 III G 1721-1726 2 50-25 1722: Reverse slopes

1235-2400 I 1235-^1800 1 320-100 25-50 Mc/s.1600-2140:

Many III 100-25 Mc/s

May 21 0000-0140 I 1700-1820 2 420-25 Weak I throughout day

1235-2400

May 22 0000-0140 Weak I throughout day

1235-2400

May 23 0000-0140

1235-2400

May 24 0000-0140 I 1235-2400 1-2 250-100

1235-2400

May 25 0000-0140 I 0000-0140 2-3 300-60

1230-2400 III G 0011-0012 2 580-100

I 1235-2400 2 320-50

III G /V1620-/V2220 1-3 100-25

May 26 0000-0140 I 0000-0140 1 320-50

1235-2400 I 1235-^1400 1 240-100

III G 1335-1336 2 320-25

III G 1339-1345 1-2 200-25

III G 1356-1358 2 100-25

III G 1446-1449 2 500-25

III G 1646-1648 2 150-25

III G /v 1700-^2200 1-3 100-25

III G 1833-1835 3 580-25

I /v 1840-2400 1-3 320-80

May 2 7 0000-0140 I 0000-0140 3 320-50

1235-2400 I 1235-2400 2 320-50

III G 1420-1427 3 500-25

III G a/1620-a/2 100 2 100-25

COABttRCZ STANDARDS - BOUt-OCR



IVh

Fort Davis

MAY JUNE I960

25-580 Me.


Date Observing Hours Type Times U.T. Int. Range Remarks

1960

May 28 0000-0140

1235-2400

I 0000-0140 2 280-100 Weak I throughout day

May 29 0000-0140

1235-2400

May 30 0000-0140 III G 1356-1357 2 420-25

1235-2400 III G 2242-2244 3 320-25

May 31 0000-0140

1235-2400

Jun. 1 0000-0140 III G 2003-2006 2 320-25

1235-2357 II 2006.8-2016 2 150-50

IV 2012-2018 1 350-180

IV 2034-2038 2 580-320

Jun. 2 0001-0140

1235-2400

III G 1817-1818 3 320-25

Jun. 3 0000-0145

1235-2400

Jun. 4 0000-0145

1235-2400

Jun. 5 0000-0145 III G 1548-1552 2 580-200

1235-2400 III G 1805-1807 2 350-125

II 2258.4-2300.5 1 75-25

Jun. 6 0000-0145 1920: Reverse slopes

1235-2400 500-320

Jun. 7 0000-0145

1235-2400

I *2140-2400 1 240-125

Jun. 8 0000-0119

1235-2400

I 0000-^0018 1 240-150

Jun. 9 0000-0145

1236-2400

Jun.10 0000-0145

1235-2400

Jun.11 0000-0145 2008: Reverse slopes

1235-2212

2217-2400

320-200 Mc/s

Jun.12 0000-0145

1235-2400

Jun.13 0000-0145 III G 0028-0029 3 580-150 0029: Reverse slopes

1235-2400 III G 1710-1713 3 350-25 450-350 Mc/s

Jun.14 0000-0145

1230-2400

III G 0005-0011 2 560-25

Jun.15 0000-0145

1230-2400

Jun.16 0000-0145

1531-2030

2045-2400

Jun.17 0000-0150

1523-2400

Jun.18 0000-0150

1215-2400

C0tMK*CZ - tTANOAMM - POOL DC* .

IVi



Fort Davis JUNE I960 25-580 Me.


Date Observing Hours Type Times U.T. Int. Range Remarks

1960

Jun.19 0000-0150 III G 0053-0055 2 320-170

1215-2400 III G 1331-1332 3+ 500-25

III G 1333-1337 3 580-25

Jun.20 0000-0150 III G 0127-0129 3+ 580-25

1215-2400 III G 0130-0134 2 580-100

II 0131.7-0138 3 240-100

III G 0135-0138 2 580-100

Jun.21 0000-0150

1215-0000

Jun.22 0000-0150

1215-2400

Jun.23 0000-0150

1215-2400

Jun.24 0000-0150

1218-2400

Jun.25 0000-0150 IV 1215-1500 2-3 580-100 Weak I throughout day

1215-2400 I /v 1320-1510 2 150-50

III G 1555-1557 2 150-25

III G 1700-1713 3 580-25 1707 Reverse Slopes

IV 1717-1923 1-3 580-320 300-250 Mc/s

I 1724-A/1840 2 100-25

III G 1950-1952 3 280-25

III G 2030-2033 3 580-25

III G 2035-2046 1-3 580-25

IV 2045-2050 1-3+ 580-150

2059-2120 2 580-100

2147-2153 2 380-100

II 2048.0-2105 3 150-25

Jun.26 0000-0150 III G 1329-1331 3 200-25

1215-2400 III G 1359-1403 3 580-25

Unci. 1411-1416 2 80-55

Ill G 1526-1528 3+ 240-25

III G 1649-1651 3 200-25

III G 1657-1658 3 125-25

III G 1659-1701 3 320-25

III G 1747-1752 3 200-25

III G 1912-1914 3 100-25

III G 1955-1957 2 200-25

III G 1958-1959 2 250-100

III G 2027-2031 1-3 200-25

III G 2039-2040 2 100-25

III G 2047-2058 1-3 200-25

I A/ 2056-^2354 1-2 100-320

III G 2107-2110 1-3 500-25

III G 2134-2136 2 250-25

Jun.2 7 0000-0150 Unc 1. 0004-0009 2 150-40 Unci. Resembles II but

1215-2400 IV 0018-0049 2-3 250-110 very little drift

III G 1713-1716 3 240-25

III G 1828-1831 2 180-25

III G 2007-2009 3 500-25

III G 2015-2018 2 450-50

IV 2150-2234 2-3 580-100 2200, 2210: Reverse slopes

*Uncl. 2159-2212 2 70-50 80-50 Mc/s; Unci: Resembles

II

Jun.28 0000-0150 Ill G 1215-1220 1-3 280-50 Unci: Resembles II

1215-2400 Unci. 1220-1225 3 175-80

Ill G 2047-2048 3 500-25

Jun.29 0000-0150 III G 0138-0140 3 580-110 Weak I throughout day

1215-2400 IV 0140-0150 3 580-175

Jun.30 0000-0150

1215-2400

COMMENCE BTAWOARD*



IV,

JANUARY 1961

OWENS VALLEY, CALIFORNIA 450-1000 Me

Date

1960

Observing Hours Type

Important Bursts

Times U.T. Int.

Frequency

Range Remarks

Dec.25 1904-2357.5 III No activity

Dec. 26 1625-2400 III No activity

Dec. 27 2303-2333 III No activity

1961 Jan. 3 1636-2402 nib 1858.5 1- 530- Fast, 15 Me shift

nib 2339 1- 480-620 Fast

nig 2322.5 2 520-620 100 Mc/sec. rate

Jan. 4 1618-1727 nig 1722.5 1 450-750 Very fast drift rate

1917-2402 No activity

Jan. 6 1644-2246 No activity



2108-2410 No activity

Jan.10 1636-2410 nib 2024 1- 450-500

Jan.16 1622-2410 No activity

Jan.17 1634-1953 No activity

1955.5-2414.5 No activity

Jan.18 1624 -1923.5 No activity

2131.5-2402.5 No activity

Jan.30 1631 -1942 No activity

1946 -2202 nig 2003 1 450-800 Very fast drift

nig 2004 2 450-1000 Very fast drift

nig 2004 2 450-600 Some fast reversed drift

nig 2008-09 1 450-800 Very fast drift rate

nig 2012.5-13 1 450-1000 Very fast drift rate

2254 -2410 No activity

Jan.31 1629 -1806 No activity

1818 -2410 No activity

STAMOAftDS HULDCII

COSMIC RAY INDICES

(Climax Neutron Monitor)

Dec. 1960

Daily average

counts/hr

Dec. 1960

Daily average

counts/hr

1 2845.1 17 2869.9 2 2853.9 18 2894.9 3 2855.6 19 2882.1 4 2852.8 20 2882.4 5 2865.9 21 2908.2 6 2839.8 22 2916.3 7 2850.1 23 2919.4 8 2855.3 24 2915.6 9 25 2925.3

10 26 2856.8 11 27 2850.7 12 28 2894.9 13 2872.5 29 2905.8 14 2824.1 30 2908.2 15 2849.4 31 2907.6 16 2868.0

COMkCRCC - STAMOAMM - BOULDER

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GEOMAGNETIC ACTIVITY INDICES

DECEMBER I960

Dec. 1960

c

Values Kp Sum Ap

Final

Selected

Days

Three hour Gr. interval

1 2 3 4 5678

1 1 8 6+ 80 7- 5o 5+ 60 6- 60 49o 93 Five

2 1 2 4- 4o 4- 4o 5o 3+ 3+ 4- 31- 26 Quiet

3 0 3 2+ 4o 2o 3- 1+ 2- 0+ lo 15+ 9

4 0 3 1- Oo 2o 2- 2+ 2+ 2o 1- 12- 6 4

5 0 5 lo 3o 1+ 3o 3o 2+ 3o 1+ 18o 10 11 14

6 1 2 lo 3- 2+ 4- 4+ 4o 4+ 4o 26+ 21 17

7 1 3 2o 4- 2+ 3- 4o 2- 3o 6- 27o 25 25

8 0 9 5- 5+ 4- 4o 3- 2- lo 2- 25- 22

9 1 1 2o 4+ 3+ 4- 4+ 3+ 4- 3- 2 7+ 20

10 0 6 3- 3- 1+ 2o 2o 2+ 3+ 2o 18+ 10

11 0 4 lo 1+ 2+ 2- 3- 3- 3- 3o 17+ 9 Five 12 1 1 3o 3o 2+ 3o 3- 3o 4o 4+ 25+ 18 Disturbed

13 0 6 4- 4- 4- 3o 3+ lo lo 1- 20o 14

14 0 3 Oo 1- 2o 3o 2+ 2o 1- lo 12- 6 1

15 1 5 3- 3o 3+ 4o 60 5+ 5+ 60 36- 43 2

15 16 1 2 6- 6- 5o 5- 4- 2o 1+ 2+ 30+ 33 16

17 0 2 1- 2- 3o 2o 2- 1+ 2o 2o 14+ 7 27 18 1 3 3- 4o 5o 5- 3+ 4o 4o 3- 30+ 26

19 0 9 3+ 3+ 3+ 4- 3- 3- 3- 4o 26- 17 20 1 2 4o 4o 3+ 4o 3- 3- 5- 4o 29+ 24

21 1 2 5o 3o 2+ 2+ 3+ 4+ 4o 5- 29o 25 Ten 22 0 9 4- 4o 4o 4- 3- 3o 3- 4- 27+ 20 Quiet

23 0 7 3+ 3+ 3o 3+ 4o 2o 2o 2- 23- 14 24 1 0 2+ 3- 1+ 2+ 4- 4- 3o 4o 23o 15 3

25 0 3 4- 2o 2- 2o 2- 1- 3- 2- 16o 9 4

26 0 8 4o 4o 4o 3- 3+ 2o 2- 2- 23+ 16 J

10

27 1 6 2o 4o 5o 3o 5o 60 6+ 5o 38+ 50 11 28 1 1 4o 3- 3+ 5+ 4o 4- 3+ 2- 28o 23 13 29 1 0 4o 3+ 4- 3+ 2+ 5- 3- 2o 26o 19 14 30 0 9 2o 4- 3+ 2+ 3- 4o 4o 3- 25- 17 17 31 1 0 2- 3+ 4- 3o 3+ 4- 3o 2o 24- 15 23

25

Mean: 0 92 Mean: 21

COMMERCE STANDARDS 90OLDER

VIb

DAYS IN SOLAR ROTATION INTERVAL ___ _ _ , r__,_, [Ttttttttt-ttttt_n“Ti—ro_rirTUTiFTi4“n5_T^^r n i w i «rr 20 t 21 \ 221 « 1 24 1 251 261 2n

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0123656789

PLANETARY MAGNETIC

THREE - HOUR -RANGE INDICES

Kp 1960

(and preliminary indices to 1961 January 161

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CRPL RADIO PROPAGATION QUALITY FIGURES AND FORECASTS

NORTH ATLANTIC

VII b

DECEMBER I960

— Short-term forecast I Range of reports

° Quality figure

DAY

ACTUAL

COMPARISON (SEE TEXT)

0 10 20 31

NORTH PACIFIC

ACTUAL

COMPARISON (SEE TEXT)

DISTURBED QUIET

20 0 10 31

VII c USEFUL FREQUENCY RANGES - NORTH ATLANTIC PATH

DECEMBER

0 3 6 9 12 15 18 21 24

I960

OVr 3 6 9 !2 S5 18 2t 24

-1-j-r-(-1-)-1-1-r-1-1-1-1-1-i-f- 0 0 3 6 9 12 15 18 21 24

COMMENCE

DECEMBER

VI Id

1960

Adapted from Observations by Deutsches Bundespost

Villa ALERT PERIODS AND SPECIAL WORLD INTERVALS

INTERNATIONAL WORLD DAY SERVICE

JANUARY 1961

Issued Day/Time UT Jan. 1961

Advance Geophysical Alert No. World-Wide Geophysical Alert

Special World Interval

20/0330

20/1600

Ft. Belvoir, Magnetic Storm 19/15XX

107 Magnetic Storm 19/15XX

STANDARDS 0OULDCR

Documents

ational Bureau W. Bldg jl »^Kenfromy£W ,Ufi. - nottote · OH CH 40 OO 4) xiNOlHO O' 4 00 4 O' O' 4 OH 40 4H X O (ONOO « rH 40 rH 00 43 UH 43 i/H rH r-H0'0"0rH OH rH CH OH CH 43