Viewing archive of Monday, 17 May 1999

Sunspot numberNew regionsBackground fluxCM
148 -31 1B7.7122

Solar flares

Region Start Maximum End
8534 C9.7 00:18 00:24 00:28
- C1.6 02:53 02:58 03:02
- C3.9 03:39 03:45 03:49
- C1.2 04:04 04:07 04:10
- M2.3 04:49 04:55 05:00
- C1.4 06:17 06:20 06:24
- B9.0 07:02 07:05 07:08
- C2.0 07:49 07:53 07:55
- C1.0 08:19 08:22 08:24
8534 C5.3 09:00 09:07 09:16
8541 C1.6 B1:31 13:19 13:20
8541 C6.2 17:00 17:07 17:13
8534 C5.6 17:51 18:03 18:10
8541 C1.6 20:01 20:16 20:21
- M1.0 21:50 22:02 22:12

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Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2018/07/05Kp5 (G1)
Number of spotless days in 2018:130
Last spotless day:2018/08/13

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