Observation log for Wolf Sunspot Number - 2020

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January 2020
Date	Time (JST)	P	B0	L0	North.		South.		Revised Wolf number
					g'	f	g'	f	North.	South.	Total
01
02	9:38	1.8	-3.1	57.4	0	0	1	1	0	11	11
03	10:37	1.3	-3.2	43.6	0	0	1	2	0	12	12
04
05	10:23	0.4	-3.4	17.4	0	0	1	4	0	14	14
06
07
08
09	7:46	-1.5	-3.9	326.2	1	1	2	0	11	20	31
10
11
12
13	9:24	-3.5	-4.3	272.6	0	0	1	0	0	10	10
14
15
16
17
18
19	8:49	-6.3	-4.9	193.9	0	0	0	0	0	0	0
20	7:45	-6.7	-5.0	181.3	0	0	0	0	0	0	0
21
22
23
24
25	8:56	-9.0	-5.4	114.8	0	0	0	0	0	0	0
26
27
28
29
30	7:54	-11.1	-5.8	49.6	1	1	1	0	11	10	21
31	7:36	-11.5	-5.9	36.6	1	1	0	0	11	0	11
Monthly mean					0.3	0.3	0.7	0.7	3.3	7.7	11.0
February 2020
Date	Time (JST)	P	B0	L0	North.		South.		Revised Wolf number
					g'	f	g'	f	North.	South.	Total
01	10:41	-12.0	-6.0	21.8	1	1	0	0	11	0	11
02
03
04	7:38	-13.1	-6.2	343.9	0	0	0	0	0	0	0
05	7:34	-13.5	-6.3	330.8	0	0	0	0	0	0	0
06
07	7:36	-14.3	-6.4	304.4	0	0	0	0	0	0	0
08	12:12	-14.7	-6.5	288.7	0	0	0	0	0	0	0
09	9:08	-15.1	-6.5	277.2	0	0	0	0	0	0	0
10
11	10:09	-15.8	-6.6	250.4	0	0	0	0	0	0	0
12	7:40	-16.1	-6.7	238.5	0	0	0	0	0	0	0
13
14
15	9:34	-17.2	-6.8	198.0	0	0	0	0	0	0	0
16
17
18	7:47	-18.2	-6.9	159.5	0	0	0	0	0	0	0
19	7:45	-18.5	-7.0	146.3	0	0	0	0	0	0	0
20
21	7:43	-19.1	-7.0	120.0	0	0	0	0	0	0	0
22
23	10:43	-20.0	-7.1	78.9	0	0	0	0	0	0	0
24
25
26
27	7:47	-20.8	-7.2	40.9	0	0	0	0	0	0	0
28
29
Monthly mean					0.1	0.1	0.0	0.0	0.8	0.0	0.8
March 2020
Date	Time (JST)	P	B0	L0	North.		South.		Revised Wolf number
					g'	f	g'	f	North.	South.	Total
01	8:32	-21.6	-7.2	1.0	0	0	0	0	0	0	0
02
03	7:48	-22.1	-7.2	335.1	0	0	0	0	0	0	0
04
05
06	7:51	-22.8	-7.3	295.5	0	0	0	0	0	0	0
07
08
09
10
11	7:53	-23.8	-7.2	229.5	0	0	1	0	0	10	10
12	7:56	-24.0	-7.2	216.4	0	0	1	0	0	10	10
13
14
15	8:42	-24.5	-7.2	176.5	0	0	0	0	0	0	0
16
17	8:05	-24.8	-7.1	150.4	0	0	0	0	0	0	0
18	8:04	-24.9	-7.1	137.3	0	0	0	0	0	0	0
19	8:10	-25.1	-7.1	124.1	1	0	0	0	10	0	10
20
21	11:20	-25.3	-7.0	95.9	0	0	0	0	0	0	0
22
23
24	8:13	-25.6	-6.9	58.1	0	0	0	0	0	0	0
25	8:14	-25.7	-6.9	44.9	0	0	0	0	0	0	0
26
27
28
29
30
31
Monthly mean					0.1	0.0	0.2	0.0	0.8	1.7	2.5
April 2020
Date	Time (JST)	P	B0	L0	North.		South.		Revised Wolf number
					g'	f	g'	f	North.	South.	Total
01
02	9:22	-26.2	-6.5	298.8	1	2	0	0	12	0	12
03
04	9:10	-26.2	-6.4	272.5	1	3	0	0	13	0	13
05
06	8:59	-26.3	-6.2	246.7	1	0	0	0	10	0	10
07
08
09
10	9:02	-26.2	-6.0	193.3	1	0	0	0	10	0	10
11	9:03	-26.2	-5.9	180.1	1	0	0	0	10	0	10
12
13
14	9:41	-26.1	-5.7	140.2	0	0	0	0	0	0	0
15	9:25	-26.0	-5.6	127.1	0	0	0	0	0	0	0
16
17	11:30	-25.9	-5.4	99.6	0	0	0	0	0	0	0
18
19	9:02	-25.7	-5.3	74.5	0	0	0	0	0	0	0
20
21
22
23	9:54	-25.3	-4.9	21.2	0	0	0	0	0	0	0
24
25	9:21	-25.0	-4.7	355.1	0	0	1	0	0	10	10
26	9:47	-24.9	-4.6	341.7	0	0	1	1	0	11	11
27
28	9:50	-24.6	-4.4	315.2	0	0	2	5	0	25	25
29
30	10:47	-24.1	-4.2	288.2	1	3	2	3	13	23	36
Monthly mean					0.4	0.6	0.4	0.6	4.9	4.9	9.8
May 2020
Date	Time (JST)	P	B0	L0	North.		South.		Revised Wolf number
					g'	f	g'	f	North.	South.	Total
01	12:37	-24.0	-4.1	274.1	2	4	2	2	24	22	46
02	9:44	-23.9	-4.0	262.4	2	2	1	0	22	10	32
03	9:58	-23.7	-3.9	249.1	0	0	1	0	0	10	10
04
05	9:48	-23.3	-3.7	222.7	0	0	1	0	0	10	10
06
07	9:15	-22.8	-3.5	196.5	0	0	1	0	0	10	10
08	9:27	-22.6	-3.4	183.2	0	0	1	0	0	10	10
09
10
11	9:34	-21.9	-3.1	143.5	0	0	0	0	0	0	0
12
13	14:46	-21.3	-2.8	114.2	0	0	0	0	0	0	0
14	9:33	-21.1	-2.8	103.8	0	0	0	0	0	0	0
15
16
17	10:09	-20.3	-2.4	63.8	0	0	0	0	0	0	0
18
19
20
21
22
23
24	9:48	-18.1	-1.6	331.4	1	0	0	0	10	0	10
25
26
27	9:43	-17.1	-1.2	291.8	1	0	0	0	10	0	10
28
29
30	10:53	-16.0	-0.9	251.4	0	0	0	0	0	0	0
31
Monthly mean					0.5	0.5	0.5	0.2	5.1	5.5	10.6
June 2020
Date	Time (JST)	P	B0	L0	North.		South.		Revised Wolf number
					g'	f	g'	f	North.	South.	Total
01
02	12:44	-14.8	-0.5	210.7	1	0	0	0	10	0	10
03	13:26	-14.4	-0.4	197.1	1	0	1	1	10	11	21
04
05
06	10:33	-13.3	0.0	159.0	1	0	1	3	10	13	23
07	10:09	-12.9	0.1	146.0	1	0	1	7	10	17	27
08	10:09	-12.5	0.2	132.7	1	0	1	6	10	16	26
09	10:15	-12.1	0.3	119.5	1	0	1	5	10	15	25
10	10:17	-11.7	0.5	106.5	1	0	1	4	10	14	24
11
12	11:02	-10.9	0.7	79.3	0	0	1	1	0	11	11
13
14
15	11:02	-9.6	1.1	39.6	0	0	1	1	0	11	11
16
17	10:04	-8.7	1.3	13.6	0	0	0	0	0	0	0
18
19
20	11:51	-7.4	1.7	332.9	0	0	0	0	0	0	0
21
22
23
24
25
26
27	10:27	-4.3	2.5	241.1	0	0	0	0	0	0	0
28
29	7:18	-3.4	2.7	216.3	0	0	0	0	0	0	0
30
Monthly mean					0.5	0.0	0.6	2.2	5.4	8.3	13.7
July 2020
Date	Time (JST)	P	B0	L0	North.		South.		Revised Wolf number
					g'	f	g'	f	North.	South.	Total
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16	9:59	4.3	4.5	349.8	0	0	0	0	0	0	0
17
18
19	10:04	5.6	4.7	310.1	0	0	0	0	0	0	0
20
21
22
23
24
25
26
27
28
29
30	13:47	10.3	5.7	162.5	1	1	1	1	11	11	22
31
Monthly mean					0.3	0.3	0.3	0.3	3.7	3.7	7.3
August 2020
Date	Time (JST)	P	B0	L0	North.		South.		Revised Wolf number
					g'	f	g'	f	North.	South.	Total
01	12:56	11.0	5.8	136.6	2	2	1	1	22	11	33
02	9:38	11.4	5.9	125.1	2	3	1	1	23	11	34
03	9:51	11.8	5.9	111.8	2	3	0	0	23	0	23
04	9:49	12.2	6.0	98.6	3	2	0	0	32	0	32
05	13:30	12.6	6.1	83.4	3	3	0	0	33	0	33
06	10:43	12.9	6.2	71.7	3	3	0	0	33	0	33
07
08	11:59	13.7	6.3	44.5	3	1	0	0	31	0	31
09
10
11
12	7:20	15.1	6.5	354.2	2	1	0	0	21	0	21
13	7:14	15.4	6.6	341.0	2	1	1	3	21	13	34
14	9:47	15.8	6.6	326.4	1	1	2	2	11	22	33
15
16
17
18	12:43	17.2	6.8	271.9	1	0	0	0	10	0	10
19
20	7:08	17.7	6.9	248.6	1	3	0	0	13	0	13
21
22	9:57	18.4	7.0	220.6	1	0	0	0	10	0	10
23
24	10:14	19.0	7.0	194.0	0	0	0	0	0	0	0
25
26
27
28	7:26	20.1	7.1	142.7	0	0	0	0	0	0	0
29	9:33	20.4	7.1	128.3	0	0	0	0	0	0	0
30	9:17	20.8	7.2	109.1	0	0	0	0	0	0	0
31
Monthly mean					1.5	1.4	0.3	0.4	16.6	3.4	20.0
September 2020
Date	Time (JST)	P	B0	L0	North.		South.		Revised Wolf number
					g'	f	g'	f	North.	South.	Total
01
02	12:09	21.4	7.2	74.0	0	0	0	0	0	0	0
03
04
05	8:47	22.1	7.2	36.3	0	0	0	0	0	0	0
06	8:53	22.3	7.3	23.0	0	0	0	0	0	0	0
07
08
09
10	8:35	23.2	7.3	330.3	0	0	0	0	0	0	0
11
12
13
14
15
16
17
18	12:35	24.6	7.2	222.5	0	0	0	0	0	0	0
19
20
21	15:09	25.0	7.1	181.5	0	0	0	0	0	0	0
22
23
24
25
26
27	14:30	25.7	6.9	102.7	1	0	0	0	10	0	10
28	7:41	25.8	6.9	93.2	1	0	0	0	10	0	10
29
30	7:46	25.9	6.8	66.8	1	0	0	0	10	0	10
Monthly mean					0.3	0.0	0.0	0.0	3.3	0.0	3.3
October 2020
Date	Time (JST)	P	B0	L0	North.		South.		Revised Wolf number
					g'	f	g'	f	North.	South.	Total
01
02	7:46	26.0	6.7	40.4	1	0	0	0	10	0	10
03	9:32	26.1	6.6	26.2	1	0	0	0	10	0	10
04
05
06	7:51	26.2	6.5	347.6	0	0	0	0	0	0	0
07
08
09
10
11	12:11	26.3	6.1	279.2	0	0	2	6	0	26	26
12
13
14
15
16	13:08	26.1	5.8	212.9	0	0	2	4	0	24	24
17
18	9:03	26.0	5.6	188.6	0	0	1	7	0	17	17
19
20
21	7:45	25.8	5.4	149.8	0	0	1	2	0	12	12
22
23
24	9:48	25.5	5.1	109.1	1	0	1	1	10	11	21
25
26
27	7:32	25.2	4.9	70.7	1	1	1	16	11	26	37
28
29	7:27	24.9	4.7	44.4	1	0	2	22	10	42	52
30	13:23	24.7	4.5	28.0	1	0	2	14	10	34	44
31	9:01	24.6	4.5	17.2	0	0	2	9	0	29	29
Monthly mean					0.5	0.1	1.2	6.8	5.1	18.4	23.5
November 2020
Date	Time (JST)	P	B0	L0	North.		South.		Revised Wolf number
					g'	f	g'	f	North.	South.	Total
01	9:30	24.4	4.4	3.8	0	0	2	4	0	24	24
02	7:47	24.3	4.3	351.5	1	2	0	0	12	0	12
03
04	7:52	23.9	4.1	325.1	1	0	1	6	10	16	26
05	7:53	23.7	4.0	311.9	1	0	1	13	10	23	33
06
07	10:18	23.3	3.7	284.2	1	1	1	22	11	32	43
08	12:13	23.0	3.6	269.9	1	4	1	29	14	39	53
09	7:50	22.8	3.5	259.2	1	2	1	15	12	25	37
10	7:51	22.6	3.4	246.0	1	0	1	16	10	26	36
11	7:42	22.3	3.3	232.9	1	0	1	7	10	17	27
12	7:55	22.1	3.2	219.6	1	0	2	6	10	26	36
13	8:39	21.8	3.1	206.0	0	0	2	5	0	25	25
14	10:39	21.5	2.9	191.7	0	0	2	2	0	22	22
15	9:56	21.3	2.8	178.9	0	0	2	1	0	21	21
16	9:46	21.0	2.7	165.8	0	0	1	0	0	10	10
17	7:39	20.7	2.6	153.8	0	0	1	0	0	10	10
18
19
20
21	10:34	19.5	2.1	99.5	1	2	1	1	12	11	23
22	10:18	19.1	2.0	86.5	1	2	1	1	12	11	23
23	9:04	18.8	1.9	74.0	1	2	2	8	12	28	40
24
25
26	8:04	17.8	1.5	35.0	0	0	3	8	0	38	38
27
28	9:08	17.1	1.2	8.0	1	1	4	32	11	72	83
29
30	10:34	16.3	1.0	340.9	1	1	4	43	11	83	94
Monthly mean					0.7	0.8	1.6	10.4	7.5	26.6	34.1
December 2020
Date	Time (JST)	P	B0	L0	North.		South.		Revised Wolf number
					g'	f	g'	f	North.	South.	Total
01	7:55	16.0	0.9	329.2	1	1	5	17	11	67	78
02
03
04	7:58	14.8	0.5	289.6	1	0	5	4	10	54	64
05
06	13:03	13.9	0.2	260.4	1	0	4	5	10	45	55
07	7:53	13.5	0.1	250.1	1	0	3	3	10	33	43
08	7:54	13.1	0.0	236.9	0	0	3	3	0	33	33
09
10
11	9:53	11.8	-0.4	196.3	0	0	2	1	0	21	21
12	10:29	11.3	-0.6	182.8	0	0	2	1	0	21	21
13
14
15	7:56	10.0	-0.9	144.7	0	0	2	1	0	21	21
16	7:58	9.6	-1.1	131.5	0	0	2	3	0	23	23
17
18	10:24	8.6	-1.3	103.8	0	0	2	1	0	21	21
19	10:13	8.2	-1.5	90.7	0	0	2	0	0	20	20
20
21
22	12:43	6.8	-1.8	52.5	0	0	1	1	0	11	11
23
24	8:00	5.8	-2.1	26.1	0	0	2	6	0	26	26
25
26	10:03	4.8	-2.3	358.6	0	0	2	7	0	27	27
27	11:57	4.3	-2.5	344.4	0	0	2	10	0	30	30
28	13:17	3.8	-2.6	330.5	0	0	2	12	0	32	32
29	10:35	3.4	-2.7	318.8	0	0	2	8	0	28	28
30	14:03	2.8	-2.8	303.7	0	0	2	6	0	26	26
31
Monthly mean					0.2	0.1	2.5	4.9	2.3	29.9	32.2

This individual observed result has no garantee of reliability by any public sector organizations.