Observation log for Wolf Sunspot Number - 2023

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January 2023
Date	Time (JST)	P	B0	L0	North.		South.		Revised Wolf number
					g'	f	g'	f	North.	South.	Total
01
02	11:34	1.7	-3.1	350.4	4	46	4	18	86	58	144
03	10:47	1.2	-3.2	337.7	4	58	3	23	98	53	151
04	10:48	0.7	-3.3	324.5	4	44	3	33	84	63	147
05
06
07	13:08	-0.8	-3.7	283.7	1	12	4	115	22	155	177
08	11:11	-1.2	-3.8	271.6	1	4	4	123	14	163	177
09	10:49	-1.7	-3.9	258.6	2	6	5	147	26	197	223
10
11	7:53	-2.6	-4.1	233.9	4	19	4	97	59	137	196
12
13	9:52	-3.6	-4.3	206.5	3	51	5	114	81	164	245
14
15
16
17	7:49	-5.4	-4.7	155.0	6	41	6	62	101	122	223
18	7:50	-5.9	-4.8	141.8	6	54	6	61	114	121	235
19
20	11:33	-6.9	-5.0	113.4	9	103	5	66	193	116	309
21	11:11	-7.3	-5.1	100.4	9	76	4	47	166	87	253
22
23
24
25
26	7:52	-9.5	-5.5	36.4	9	25	1	1	115	11	126
27
28	9:47	-10.4	-5.7	9.0	9	25	0	0	115	0	115
29	10:57	-10.8	-5.8	355.2	8	29	1	3	109	13	122
30
31
Monthly mean					5.3	39.5	3.7	60.7	92.2	97.3	189.5
February 2023
Date	Time (JST)	P	B0	L0	North.		South.		Revised Wolf number
					g'	f	g'	f	North.	South.	Total
01	10:39	-12.1	-6.0	315.9	4	9	3	18	49	48	97
02
03
04
05	9:22	-13.6	-6.3	263.9	4	11	4	38	51	78	129
06	10:54	-14.1	-6.3	249.9	5	16	5	34	66	84	150
07
08
09	7:50	-15.1	-6.5	212.1	7	61	5	15	131	65	196
10
11	9:35	-15.9	-6.6	184.8	9	74	4	25	164	65	229
12	10:57	-16.3	-6.7	170.9	11	80	4	35	190	75	265
13
14	7:52	-16.9	-6.8	146.3	11	48	5	21	158	71	229
15
16	7:48	-17.6	-6.9	120.0	8	39	6	19	119	79	198
17
18	10:13	-18.3	-6.9	92.3	8	54	6	4	134	64	198
19
20	7:49	-18.9	-7.0	67.3	7	34	7	4	104	74	178
21	7:55	-19.2	-7.0	54.1	8	55	5	5	135	55	190
22
23	14:21	-19.9	-7.1	24.2	5	59	1	15	109	25	134
24
25	9:55	-20.4	-7.1	0.3	5	60	3	40	110	70	180
26
27	10:44	-20.9	-7.2	333.5	4	59	3	37	99	67	166
28	7:56	-21.2	-7.2	321.8	4	25	3	15	65	45	110
Monthly mean					6.7	45.6	4.3	21.7	112.3	64.3	176.6
March 2023
Date	Time (JST)	P	B0	L0	North.		South.		Revised Wolf number
					g'	f	g'	f	North.	South.	Total
01
02
03	7:54	-21.9	-7.2	282.3	7	31	4	7	101	47	148
04	10:10	-22.2	-7.2	267.9	6	48	5	18	108	68	176
05	9:48	-22.4	-7.3	255.0	5	54	3	20	104	50	154
06
07	7:53	-22.8	-7.3	229.7	7	62	4	41	132	81	213
08	7:56	-23.0	-7.3	216.5	6	33	5	26	93	76	169
09	9:49	-23.3	-7.3	202.3	7	65	6	48	135	108	243
10
11	10:12	-23.7	-7.2	175.7	6	20	6	56	80	116	196
12
13
14
15
16	8:03	-24.5	-7.2	111.0	2	1	9	26	21	116	137
17
18
19	8:16	-25.0	-7.1	71.3	1	0	7	11	10	81	91
20	10:07	-25.1	-7.1	57.1	3	1	6	21	31	81	112
21
22	8:11	-25.3	-7.0	31.8	3	5	6	44	35	104	139
23
24
25
26
27	9:30	-25.8	-6.8	325.2	5	24	4	18	74	58	132
28
29
30
31
Monthly mean					4.8	28.7	5.4	28.0	77.0	82.2	159.2
April 2023
Date	Time (JST)	P	B0	L0	North.		South.		Revised Wolf number
					g'	f	g'	f	North.	South.	Total
01	9:22	-26.1	-6.6	259.3	3	11	5	5	41	55	96
02	13:03	-26.2	-6.5	244.0	3	7	3	2	37	32	69
03
04	6:45	-26.2	-6.4	221.1	2	7	5	24	27	74	101
05
06
07
08
09	8:48	-26.3	-6.1	154.0	0	0	4	38	0	78	78
10	11:37	-26.2	-6.0	139.3	2	12	3	52	32	82	114
11
12
13	9:55	-26.1	-5.8	100.6	4	18	6	99	58	159	217
14
15
16	14:09	-26.0	-5.6	58.7	6	37	6	84	97	144	241
17
18
19	7:01	-25.8	-5.3	23.0	3	22	6	64	52	124	176
20
21	9:43	-25.6	-5.2	355.1	2	33	6	41	53	101	154
22	9:27	-25.5	-5.1	342.0	2	12	6	19	32	79	111
23
24
25	6:53	-25.1	-4.8	303.8	1	2	7	19	12	89	101
26
27	6:57	-24.7	-4.6	277.4	3	15	6	29	45	89	134
28	11:03	-24.6	-4.5	261.9	4	27	5	45	67	95	162
29
30
Monthly mean					2.7	15.6	5.2	40.1	42.5	92.4	134.9
May 2023
Date	Time (JST)	P	B0	L0	North.		South.		Revised Wolf number
					g'	f	g'	f	North.	South.	Total
01	13:52	-24.1	-4.2	220.7	4	23	4	29	63	69	132
02	10:06	-24.0	-4.1	209.5	4	30	4	10	70	50	120
03
04	9:15	-23.6	-3.9	183.6	6	70	5	11	130	61	191
05	9:28	-23.4	-3.8	170.2	6	83	4	8	143	48	191
06	13:10	-23.2	-3.7	155.0	6	62	3	9	122	39	161
07
08
09
10	6:51	-22.3	-3.3	105.6	7	102	3	8	172	38	210
11	6:56	-22.1	-3.2	92.3	7	90	3	13	160	43	203
12	9:31	-21.8	-3.1	77.6	8	70	3	9	150	39	189
13
14
15
16
17	6:53	-20.5	-2.5	13.0	5	54	4	10	104	50	154
18	6:51	-20.2	-2.4	359.8	5	38	5	13	88	63	151
19
20	12:22	-19.6	-2.1	330.3	6	78	5	16	138	66	204
21	10:06	-19.3	-2.0	318.3	6	76	3	27	136	57	193
22	9:51	-19.0	-1.9	305.2	6	58	3	28	118	58	176
23
24
25
26	7:04	-17.7	-1.5	253.8	4	53	3	58	93	88	181
27	9:59	-17.3	-1.3	239.0	4	32	3	51	72	81	153
28
29
30
31
Monthly mean					5.6	61.3	3.7	20.0	117.3	56.7	173.9
June 2023
Date	Time (JST)	P	B0	L0	North.		South.		Revised Wolf number
					g'	f	g'	f	North.	South.	Total
01	6:58	-15.6	-0.7	174.5	7	15	4	58	85	98	183
02
03	14:57	-14.7	-0.5	143.6	7	20	4	44	90	84	174
04	9:51	-14.4	-0.4	133.2	5	27	4	78	77	118	195
05	12:55	-14.0	-0.2	118.3	5	18	4	82	68	122	190
06
07
08
09
10	10:01	-12.0	0.4	53.7	5	20	5	75	70	125	195
11
12
13
14
15
16	7:20	-9.5	1.1	335.8	5	13	6	33	63	93	156
17	10:07	-9.1	1.2	321.0	5	19	5	83	69	133	202
18
19	9:58	-8.2	1.4	294.6	5	32	7	75	82	145	227
20
21
22
23
24	10:26	-6.0	2.0	228.2	9	75	7	45	165	115	280
25	15:27	-5.4	2.2	212.2	9	59	8	38	149	118	267
26
27
28
29	10:03	-3.7	2.6	162.2	5	75	5	6	125	56	181
30
Monthly mean					6.1	33.9	5.4	56.1	94.8	109.7	204.5
July 2023
Date	Time (JST)	P	B0	L0	North.		South.		Revised Wolf number
					g'	f	g'	f	North.	South.	Total
01
02	10:01	-2.4	2.9	122.5	3	70	6	44	100	104	204
03	10:58	-1.9	3.0	108.7	3	54	6	51	84	111	195
04
05
06
07	10:04	-0.1	3.5	56.3	3	31	8	57	61	137	198
08
09	14:25	0.9	3.7	27.4	4	60	8	37	100	117	217
10	9:57	1.3	3.8	16.6	4	74	10	75	114	175	289
11	6:52	1.7	3.9	5.1	4	71	9	72	111	162	273
12	6:48	2.1	4.0	351.9	5	53	10	60	103	160	263
13
14
15
16	8:55	3.9	4.4	297.8	6	46	4	31	106	71	177
17	8:47	4.4	4.5	284.7	5	81	4	26	131	66	197
18
19
20	6:51	5.6	4.7	246.0	5	76	5	17	126	67	193
21	14:45	6.2	4.9	228.4	4	69	5	20	109	70	179
22	9:49	6.6	4.9	217.9	4	86	3	23	126	53	179
23	9:51	7.0	5.0	204.7	4	67	3	9	107	39	146
24	9:58	7.4	5.1	191.4	4	51	5	21	91	71	162
25
26	6:43	8.2	5.3	166.7	5	56	7	34	106	104	210
27
28	10:12	9.1	5.4	138.4	6	47	6	35	107	95	202
29	10:47	9.5	5.5	124.8	5	52	7	57	102	127	229
30	10:26	9.9	5.6	111.8	7	41	6	55	111	115	226
31
Monthly mean					4.5	60.3	6.2	40.2	105.3	102.4	207.7
August 2023
Date	Time (JST)	P	B0	L0	North.		South.		Revised Wolf number
					g'	f	g'	f	North.	South.	Total
01
02	6:46	11.0	5.8	74.1	5	58	5	46	108	96	204
03
04	9:47	11.9	6.0	46.0	6	42	6	16	102	76	178
05	9:53	12.3	6.0	32.7	7	56	5	9	126	59	185
06	10:25	12.6	6.1	19.2	6	45	4	6	105	46	151
07	10:36	13.0	6.2	5.9	7	32	4	12	102	52	154
08
09
10	10:36	14.1	6.4	326.2	5	34	3	17	84	47	131
11	9:41	14.5	6.4	313.5	5	48	4	20	98	60	158
12	13:19	14.9	6.5	298.3	3	40	3	6	70	36	106
13	9:54	15.2	6.5	286.9	3	45	4	7	75	47	122
14	11:02	15.6	6.6	273.1	5	56	4	4	106	44	150
15
16	9:33	16.2	6.7	247.5	6	41	6	33	101	93	194
17	12:02	16.6	6.7	232.9	4	53	5	28	93	78	171
18	11:19	16.9	6.8	220.0	5	50	4	22	100	62	162
19
20	10:33	17.5	6.8	194.0	5	23	5	21	73	71	144
21	9:28	17.8	6.9	181.4	6	15	4	22	75	62	137
22
23
24	6:57	18.7	7.0	143.2	4	20	3	15	60	45	105
25	10:46	19.1	7.0	127.9	4	28	3	7	68	37	105
26	10:47	19.4	7.1	114.6	4	21	4	14	61	54	115
27
28	9:22	19.9	7.1	89.0	3	27	3	16	57	46	103
29
30
31	8:57	20.7	7.2	49.6	3	23	3	25	53	55	108
Monthly mean					4.8	37.9	4.1	17.3	85.9	58.3	144.2
September 2023
Date	Time (JST)	P	B0	L0	North.		South.		Revised Wolf number
					g'	f	g'	f	North.	South.	Total
01
02	10:08	21.2	7.2	22.5	3	19	3	29	49	59	108
03	9:31	21.5	7.2	9.6	2	6	3	26	26	56	82
04
05
06
07	15:03	22.5	7.3	313.8	6	65	2	1	125	21	146
08
09
10	9:51	23.0	7.3	277.0	8	107	6	11	187	71	258
11	12:47	23.3	7.3	262.2	7	88	6	29	158	89	247
12
13	6:52	23.6	7.2	239.0	6	74	5	20	134	70	204
14
15	9:43	24.0	7.2	211.1	5	71	4	10	121	50	171
16	10:48	24.2	7.2	197.3	7	43	5	5	113	55	168
17	14:49	24.4	7.2	181.8	7	48	5	2	118	52	170
18	12:55	24.5	7.2	169.7	7	50	4	6	120	46	166
19
20
21
22
23
24	9:21	25.3	7.0	92.4	8	91	4	57	171	97	268
25	6:55	25.4	7.0	80.6	8	72	4	62	152	102	254
26
27
28
29
30	8:51	25.9	6.8	13.5	7	32	4	23	102	63	165
Monthly mean					6.2	58.9	4.2	21.6	121.2	63.9	185.2
October 2023
Date	Time (JST)	P	B0	L0	North.		South.		Revised Wolf number
					g'	f	g'	f	North.	South.	Total
01
02	7:59	26.0	6.7	347.6	6	55	3	38	115	68	183
03
04
05
06	11:45	26.2	6.5	294.9	6	76	4	27	136	67	203
07	9:28	26.2	6.4	280.8	6	69	4	30	129	70	199
08
09
10
11
12
13	7:40	26.2	6.1	202.7	7	42	3	36	112	66	178
14	9:04	26.2	6.0	188.7	7	33	3	18	103	48	151
15
16	8:38	26.2	5.8	162.6	7	39	2	7	109	27	136
17
18
19
20	7:22	25.9	5.5	110.5	4	14	2	1	54	21	75
21	10:04	25.9	5.4	95.8	5	20	1	1	70	11	81
22	9:31	25.8	5.4	82.9	4	24	1	1	64	11	75
23	7:44	25.7	5.3	70.7	4	5	2	9	45	29	74
24
25
26	7:02	25.4	5.0	31.6	2	0	2	7	20	27	47
27	9:53	25.3	4.9	16.7	3	6	3	11	36	41	77
28	15:42	25.1	4.8	0.4	4	9	2	7	49	27	76
29
30	6:56	24.9	4.6	338.9	3	28	2	16	58	36	94
31
Monthly mean					4.9	30.0	2.4	14.9	78.6	39.2	117.8
November 2023
Date	Time (JST)	P	B0	L0	North.		South.		Revised Wolf number
					g'	f	g'	f	North.	South.	Total
01
02	13:28	24.3	4.3	295.7	4	33	3	46	73	76	149
03	10:21	24.2	4.2	284.2	5	19	4	53	69	93	162
04	9:28	24.0	4.1	271.5	5	16	4	42	66	82	148
05	9:41	23.8	4.0	258.2	5	10	4	44	60	84	144
06
07
08	6:57	23.2	3.7	220.2	6	20	2	22	80	42	122
09	10:53	23.0	3.6	204.8	5	38	3	27	88	57	145
10
11
12
13	14:06	22.0	3.1	150.3	3	9	4	19	39	59	98
14
15
16	7:00	21.2	2.8	114.7	2	1	2	7	21	27	48
17
18	12:54	20.6	2.5	85.1	1	0	2	11	10	31	41
19	10:47	20.3	2.4	73.0	2	4	1	8	24	18	42
20
21
22
23	15:04	19.0	1.9	18.0	6	32	6	30	92	90	182
24	9:39	18.7	1.8	7.8	6	53	7	59	113	129	242
25	10:19	18.4	1.7	354.2	6	24	8	36	84	116	200
26
27	9:31	17.7	1.5	328.3	8	35	6	45	115	105	220
28
29
30
Monthly mean					4.6	21.0	4.0	32.1	66.7	72.1	138.8
December 2023
Date	Time (JST)	P	B0	L0	North.		South.		Revised Wolf number
					g'	f	g'	f	North.	South.	Total
01	10:26	16.2	1.0	275.0	8	8	6	34	88	94	182
02	10:08	15.8	0.8	262.1	6	19	6	26	79	86	165
03	10:53	15.4	0.7	248.5	4	10	6	35	50	95	145
04
05
06
07	8:48	13.8	0.2	196.9	3	20	5	17	50	67	117
08	9:15	13.4	0.1	183.5	3	19	5	21	49	71	120
09	10:57	12.9	-0.1	169.4	3	39	7	21	69	91	160
10	10:20	12.5	-0.2	156.5	3	46	6	23	76	83	159
11	11:11	12.1	-0.3	142.9	3	49	6	17	79	77	156
12
13
14
15
16
17	10:32	9.4	-1.1	64.2	8	13	5	20	93	70	163
18	10:13	9.0	-1.2	51.2	7	27	7	42	97	112	209
19
20
21
22	9:05	7.1	-1.7	359.1	8	46	6	26	126	86	212
23	9:39	6.6	-1.9	345.6	8	72	6	24	152	84	236
24
25
26
27
28	9:41	4.2	-2.5	279.8	5	22	3	12	72	42	114
29	9:25	3.8	-2.6	266.7	3	30	4	29	60	69	129
30	9:01	3.3	-2.7	253.8	2	16	4	21	36	61	97
31
Monthly mean					4.9	29.1	5.5	24.5	78.4	79.2	157.6

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