List of Wolf Sunspot Number

Observation log for Wolf Sunspot Number - 2024

January 2024
Date	Time (JST)	P	B₀	L₀	North.		South.		Revised Wolf number
Date	Time (JST)	P	B₀	L₀	g'	f	g'	f	North.	South.	Total
01	15:06	3.3	-2.7	253.8	2	8	3	15	28	45	73
02
03
04	12:10	0.8	-3.3	186.2	3	47	1	9	77	19	96
05	10:26	0.4	-3.4	174.0	4	50	3	16	90	46	136
06	9:22	-0.1	-3.5	161.4	5	81	3	25	131	55	186
07	9:26	-0.6	-3.6	148.2	6	67	4	30	127	70	197
08	9:16	-1.1	-3.7	135.1	6	73	4	57	133	97	230
09
10
11
12	9:14	-3.0	-4.2	82.4	6	49	7	92	109	162	271
13
14	8:47	-3.9	-4.4	56.4	6	33	7	75	93	145	238
15	9:17	-4.4	-4.5	42.9	6	23	8	63	83	143	226
16
17	12:08	-5.4	-4.7	15.0	6	17	10	45	77	145	222
18
19	9:46	-6.3	-4.9	350.0	7	28	6	24	98	84	182
20
21
22	8:16	-7.6	-5.2	311.3	6	46	6	37	106	97	203
23
24
25
26	9:06	-9.4	-5.5	258.2	2	25	5	27	45	77	122
27	9:23	-9.8	-5.6	244.9	2	18	5	12	38	62	100
28
29	10:44	-10.7	-5.8	217.8	2	14	4	17	34	57	91
30
31
Monthly mean					4.6	38.6	5.1	36.3	84.6	86.9	171.5

February 2024
Date	Time (JST)	P	B₀	L₀	North.		South.		Revised Wolf number
Date	Time (JST)	P	B₀	L₀	g'	f	g'	f	North.	South.	Total
01
02	13:06	-12.4	-6.1	163.8	4	35	8	10	75	90	165
03	9:53	-12.8	-6.1	152.4	4	27	8	16	67	96	163
04	13:11	-13.2	-6.2	137.4	4	37	8	43	77	123	200
05
06
07
08	9:21	-14.7	-6.4	86.9	5	22	9	112	72	202	274
09	10:39	-15.1	-6.5	73.0	4	10	7	96	50	166	216
10	11:03	-15.5	-6.6	59.6	5	13	6	95	63	155	218
11	10:57	-15.8	-6.6	46.5	5	29	7	94	79	164	243
12	8:48	-16.2	-6.7	34.5	4	28	6	55	68	115	183
13
14
15
16	9:07	-17.5	-6.8	341.6	4	13	8	18	53	98	151
17	10:05	-17.9	-6.9	328.0	4	26	6	15	66	75	141
18	10:03	-18.2	-6.9	314.8	4	32	5	25	72	75	147
19
20
21
22
23
24	8:47	-20.0	-7.1	236.5	4	47	4	6	87	46	133
25
26
27
28
29


Monthly mean					4.3	26.6	6.8	48.8	69.1	117.1	186.2

March 2024
Date	Time (JST)	P	B₀	L₀	North.		South.		Revised Wolf number
Date	Time (JST)	P	B₀	L₀	g'	f	g'	f	North.	South.	Total
01	11:14	-21.6	-7.2	156.1	5	48	2	13	98	33	131
02	12:19	-21.9	-7.2	142.4	5	43	4	35	93	75	168
03	7:48	-22.1	-7.2	131.7	5	10	5	24	60	74	134
04	8:41	-22.3	-7.3	118.0	6	15	5	17	75	67	142
05
06
07
08
09	10:24	-23.4	-7.2	51.2	5	9	3	60	59	90	149
10	9:34	-23.6	-7.2	38.5	3	7	3	50	37	80	117
11	10:52	-23.8	-7.2	24.6	3	6	3	41	36	71	107
12
13
14	9:27	-24.3	-7.2	345.8	6	15	5	25	75	75	150
15
16	8:48	-24.6	-7.2	319.8	6	3	3	9	63	39	102
17	10:09	-24.8	-7.1	305.9	6	15	3	27	75	57	132
18	9:38	-24.9	-7.1	293.0	7	23	4	33	93	73	166
19
20	8:21	-25.2	-7.0	267.3	6	37	5	94	97	144	241
21
22
23
24	9:43	-25.6	-6.9	213.9	5	42	5	155	92	205	297
25
26
27	6:52	-25.9	-6.8	175.8	4	28	5	99	68	149	217
28
29
30	9:05	-26.1	-6.6	135.1	3	1	4	36	31	76	107
31	8:59	-26.1	-6.6	121.9	3	3	3	10	33	40	73
Monthly mean					4.9	19.1	3.9	45.5	67.8	84.3	152.1

April 2024
Date	Time (JST)	P	B₀	L₀	North.		South.		Revised Wolf number
Date	Time (JST)	P	B₀	L₀	g'	f	g'	f	North.	South.	Total
01
02	7:49	-26.2	-6.5	96.2	5	11	1	0	61	10	71
03
04
05
06
07	14:34	-26.3	-6.2	26.5	6	26	2	13	86	33	119
08
09
10	7:20	-26.2	-6.0	350.9	6	17	1	12	77	22	99
11	7:36	-26.2	-5.9	337.5	6	24	1	8	84	18	102
12
13	9:34	-26.1	-5.8	310.1	5	48	2	16	98	36	134
14	9:07	-26.1	-5.7	297.1	6	64	4	13	124	53	177
15	8:50	-26.0	-5.6	284.0	7	83	4	14	153	54	207
16
17
18
19	13:40	-25.7	-5.3	228.6	9	42	7	73	132	143	275
20
21	9:22	-25.5	-5.1	204.5	11	57	7	149	167	219	386
22
23
24
25	9:17	-25.0	-4.7	151.7	8	49	11	115	129	225	354
26	9:18	-24.9	-4.6	138.5	7	37	10	88	107	188	295
27
28	9:08	-24.6	-4.5	112.2	7	17	6	58	87	118	205
29	9:31	-24.4	-4.4	98.7	6	14	6	52	74	112	186
30

Monthly mean					6.8	37.6	4.8	47.0	106.1	94.7	200.8

May 2024
Date	Time (JST)	P	B₀	L₀	North.		South.		Revised Wolf number
Date	Time (JST)	P	B₀	L₀	g'	f	g'	f	North.	South.	Total
01
02	9:15	-23.9	-4.1	59.2	4	50	6	32	90	92	182
03	12:52	-23.6	-3.9	44.0	5	78	6	37	128	97	225
04	9:58	-23.5	-3.8	32.4	5	102	3	56	152	86	238
05	9:31	-23.3	-3.7	19.5	6	99	3	59	159	89	248
06
07
08
09
10	9:32	-22.1	-3.2	313.4	7	27	4	107	97	147	244
11	10:31	-21.9	-3.1	299.5	6	41	6	129	101	189	290
12
13
14
15
16
17	9:34	-20.3	-2.4	220.7	7	21	9	111	91	201	292
18	10:07	-20.0	-2.3	207.2	7	16	8	129	86	209	295
19
20
21	7:22	-19.1	-2.0	169.0	4	7	9	99	47	189	236
22
23
24	10:12	-18.1	-1.6	127.8	4	4	6	100	44	160	204
25	9:40	-17.8	-1.5	114.8	4	18	6	77	58	137	195
26	9:54	-17.4	-1.4	101.4	2	23	6	39	43	99	142
27
28
29
30	7:30	-16.0	-0.9	49.9	5	98	5	39	148	89	237
31
Monthly mean					5.1	44.9	5.9	78.0	95.7	137.2	232.9

June 2024
Date	Time (JST)	P	B₀	L₀	North.		South.		Revised Wolf number
Date	Time (JST)	P	B₀	L₀	g'	f	g'	f	North.	South.	Total
01	10:00	-15.2	-0.6	22.0	7	148	3	64	218	94	312
02
03
04	6:47	-14.2	-0.3	344.1	8	70	7	139	150	209	359
05	6:43	-13.8	-0.2	330.9	7	42	7	138	112	208	320
06
07
08	10:05	-12.5	0.2	289.3	2	15	8	123	35	203	238
09
10	9:54	-11.7	0.5	263.0	1	6	10	76	16	176	192
11	7:21	-11.3	0.6	251.2	2	7	8	61	27	141	168
12
13
14	9:56	-10.0	0.9	210.0	5	14	7	117	64	187	251
15	10:03	-9.6	1.1	196.7	6	32	7	100	92	170	262
16	12:57	-9.1	1.2	181.9	4	53	6	108	93	168	261
17
18
19	7:25	-7.9	1.5	145.2	5	44	5	94	94	144	238
20	7:22	-7.5	1.6	132.0	4	53	5	114	93	164	257
21
22	8:36	-6.6	1.9	104.9	3	24	5	95	54	145	199
23
24
25
26
27
28
29	14:41	-3.3	2.7	8.8	4	11	12	78	51	198	249
30

Monthly mean					4.5	39.9	6.9	100.5	84.5	169.8	254.3

July 2024
Date	Time (JST)	P	B₀	L₀	North.		South.		Revised Wolf number
Date	Time (JST)	P	B₀	L₀	g'	f	g'	f	North.	South.	Total
01
02	6:44	-2.1	3.0	333.5	5	32	10	100	82	200	282
03
04	10:32	-1.1	3.2	304.9	5	30	10	57	80	157	237
05	9:56	-0.7	3.3	292.0	3	35	10	59	65	159	224
06
07	9:58	0.3	3.6	265.6	4	29	6	59	69	119	188
08
09	7:14	1.1	3.7	240.6	4	4	5	75	44	125	169
10
11
12
13	8:33	2.9	4.2	186.9	4	25	8	155	65	235	300
14
15
16
17
18	7:57	5.1	4.6	121.1	8	31	10	102	111	202	313
19
20	9:50	6.0	4.8	93.6	8	30	12	107	110	227	337
21	9:50	6.4	4.9	80.4	7	47	11	136	117	246	363
22	9:46	6.9	5.0	67.2	8	23	8	114	103	194	297
23
24	7:14	7.7	5.2	42.1	7	9	8	93	79	173	252
25
26	9:54	8.6	5.3	14.2	4	5	8	93	45	173	218
27	9:42	9.0	5.4	1.1	6	13	8	127	73	207	280
28
29
30	7:13	10.2	5.6	322.7	4	37	7	142	77	212	289
31
Monthly mean					5.5	25.0	8.6	101.4	80.0	187.8	267.8

August 2024
Date	Time (JST)	P	B₀	L₀	North.		South.		Revised Wolf number
Date	Time (JST)	P	B₀	L₀	g'	f	g'	f	North.	South.	Total
01	8:00	11.0	5.8	295.9	6	36	9	202	96	292	388
02	9:49	11.4	5.9	281.6	5	36	8	148	86	228	314
03	9:58	11.8	5.9	268.3	5	43	8	157	93	237	330
04	9:31	12.2	6.0	255.4	5	24	10	109	74	209	283
05	7:23	12.5	6.1	243.3	5	24	7	142	74	212	286
06	9:29	12.9	6.1	228.9	5	32	4	183	82	223	305
07	10:25	13.3	6.2	215.2	6	37	4	242	97	282	379
08	9:33	13.7	6.3	202.5	5	51	4	260	101	300	401
09	9:24	14.0	6.3	189.3	6	53	4	215	113	255	368
10	10:25	14.4	6.4	175.5	6	49	4	170	109	210	319
11	9:32	14.7	6.4	162.8	5	58	6	168	108	228	336
12	9:36	15.1	6.5	149.5	6	55	6	134	115	194	309
13	9:58	15.5	6.6	136.1	5	74	6	112	124	172	296
14	9:12	15.8	6.6	123.3	6	96	5	115	156	165	321
15	9:14	16.1	6.7	110.1	6	65	4	91	125	131	256
16
17	9:40	16.8	6.8	83.4	5	69	7	77	119	147	266
18	10:15	17.1	6.8	69.9	5	83	6	78	133	138	271
19
20
21
22
23	15:10	18.8	7.0	1.1	7	29	7	130	99	200	299
24	10:42	19.0	7.0	350.3	6	45	6	153	105	213	318
25	11:55	19.3	7.1	336.4	6	36	5	163	96	213	309
26	7:18	19.5	7.1	325.8	6	35	6	136	95	196	291
27
28
29
30
31
Monthly mean					5.6	49.0	6.0	151.7	104.8	211.7	316.4

September 2024
Date	Time (JST)	P	B₀	L₀	North.		South.		Revised Wolf number
Date	Time (JST)	P	B₀	L₀	g'	f	g'	f	North.	South.	Total
01	13:11	21.2	7.2	243.3	4	15	8	104	55	184	239
02	9:21	21.4	7.2	232.2	5	14	8	122	64	202	266
03
04
05	7:14	22.1	7.2	193.7	5	3	8	140	53	220	273
06	10:11	22.4	7.3	178.9	5	3	9	210	53	300	353
07	9:26	22.6	7.3	166.1	4	6	8	144	46	224	270
08
09
10	7:18	23.2	7.3	127.6	4	41	8	59	81	139	220
11
12	7:22	23.6	7.2	101.2	3	36	9	58	66	148	214
13
14	12:57	24.0	7.2	71.7	2	34	8	74	54	154	208
15
16
17
18
19
20	11:10	24.9	7.1	353.5	3	28	4	68	58	108	166
21
22
23	8:36	25.2	7.0	315.4	3	22	5	59	52	109	161
24	7:54	25.4	7.0	302.5	3	12	6	53	42	113	155
25
26	8:03	25.6	6.9	276.0	3	18	6	84	48	144	192
27
28	11:54	25.8	6.8	247.5	2	3	7	57	23	127	150
29
30

Monthly mean					3.5	18.1	7.2	94.8	53.5	167.1	220.5

October 2024
Date	Time (JST)	P	B₀	L₀	North.		South.		Revised Wolf number
Date	Time (JST)	P	B₀	L₀	g'	f	g'	f	North.	South.	Total
01
02
03	12:19	26.1	6.6	181.3	5	62	8	116	112	196	308
04
05
06
07
08
09
10
11	7:32	26.3	6.1	78.4	2	24	4	73	44	113	157
12	7:48	26.2	6.1	65.0	2	26	4	84	46	124	170
13	8:40	26.2	6.0	51.4	4	24	4	75	64	115	179
14
15	7:59	26.2	5.9	25.4	4	6	6	70	46	130	176
16
17	7:45	26.1	5.7	359.1	3	27	5	44	57	94	151
18
19	7:54	26.0	5.6	332.7	2	11	8	57	31	137	168
20	9:04	25.9	5.5	318.8	1	10	8	43	20	123	143
21	7:55	25.8	5.4	306.3	2	8	8	38	28	118	146
22	7:32	25.7	5.3	293.2	1	3	11	41	13	151	164
23
24
25	14:03	25.4	5.0	250.1	2	7	11	75	27	185	212
26
27	8:52	25.2	4.9	226.6	2	35	10	127	55	227	282
28
29
30
31	7:32	24.6	4.5	174.6	4	45	7	79	85	149	234
Monthly mean					2.6	22.2	7.2	70.9	48.3	143.2	191.5

November 2024
Date	Time (JST)	P	B₀	L₀	North.		South.		Revised Wolf number
Date	Time (JST)	P	B₀	L₀	g'	f	g'	f	North.	South.	Total
01	9:08	24.4	4.4	160.5	4	67	8	84	107	164	271
02
03	8:23	24.1	4.2	134.6	5	41	11	46	91	156	247
04	8:37	23.9	4.1	121.3	4	25	11	46	65	156	221
05
06
07	7:51	23.3	3.7	82.1	4	13	6	78	53	138	191
08	10:37	23.0	3.6	67.4	4	11	6	138	51	198	249
09	10:44	22.8	3.5	54.2	2	5	6	146	25	206	231
10
11	12:43	22.3	3.3	26.7	1	1	6	122	11	182	193
12	7:51	22.1	3.2	16.2	0	0	7	114	0	184	184
13	7:52	21.8	3.1	3.3	0	0	7	84	0	154	154
14
15
16	8:21	21.0	2.7	323.2	1	2	5	46	12	96	108
17	10:46	20.7	2.6	308.7	1	1	6	27	11	87	98
18	12:44	20.4	2.5	294.4	3	5	8	28	35	108	143
19	7:52	20.1	2.4	283.9	3	4	8	20	34	100	134
20
21
22	8:20	19.2	2.0	244.1	3	8	8	52	38	132	170
23	10:44	18.8	1.9	229.7	3	7	9	45	37	135	172
24	7:58	18.5	1.7	218.0	1	3	8	38	13	118	131
25	8:42	18.1	1.6	204.4	3	11	8	97	41	177	218
26
27
28	7:52	17.1	1.2	165.3	4	22	7	65	62	135	197
29	7:47	16.7	1.1	152.1	3	17	7	78	47	148	195
30	10:10	16.3	1.0	137.7	3	13	7	99	43	169	212

Monthly mean					2.6	12.8	7.5	72.7	38.8	147.2	186.0

December 2024
Date	Time (JST)	P	B₀	L₀	North.		South.		Revised Wolf number
Date	Time (JST)	P	B₀	L₀	g'	f	g'	f	North.	South.	Total
01	8:29	15.9	0.9	125.4	3	7	8	72	37	152	189
02	11:26	15.5	0.7	110.6	2	6	5	69	26	119	145
03	7:51	15.2	0.6	99.4	4	14	5	39	54	89	143
04
05
06	9:18	13.9	0.2	59.0	4	5	4	86	45	126	171
07	9:22	13.5	0.1	45.8	4	6	4	85	46	125	171
08	10:01	13.1	0.0	32.3	4	9	5	92	49	142	191
09	10:45	12.6	-0.2	18.8	3	9	7	114	39	184	223
10	11:28	12.2	-0.3	5.2	2	20	7	100	40	170	210
11
12	8:02	11.4	-0.5	340.7	2	23	5	40	43	90	133
13
14	9:48	10.4	-0.8	313.4	3	30	6	50	60	110	170
15	9:27	10.0	-0.9	300.4	2	24	6	68	44	128	172
16	10:40	9.5	-1.1	286.6	2	20	6	68	40	128	168
17	7:56	9.1	-1.2	274.9	2	7	4	24	27	64	91
18	7:53	8.7	-1.3	261.7	2	5	3	20	25	50	75
19
20	10:05	7.7	-1.6	234.2	3	10	6	58	40	118	158
21	10:16	7.2	-1.7	220.9	4	11	6	81	51	141	192
22	9:49	6.7	-1.8	207.9	4	18	7	84	58	154	212
23
24	7:56	5.8	-2.1	182.7	6	21	8	70	81	150	231
25	7:55	5.4	-2.2	169.5	5	23	8	68	73	148	221
26
27
28
29	10:06	3.4	-2.7	115.6	5	52	8	50	102	130	232
30	10:12	2.9	-2.8	102.4	3	58	8	66	88	146	234
31
Monthly mean					3.3	18.0	6.0	66.9	50.9	126.9	177.7