Viewing archive of Thursday, 16 April 1998

Sunspot numberNew regionsBackground fluxC
59 -201 1B4.83

Solar flares

Region Start Maximum End
- C9.5 01:02 01:11 01:17
8202 C1.0 02:19 02:23 02:32
- C1.0 04:06 04:24 04:45
- B4.5 09:04 09:08 09:13
- B7.8 09:23 09:32 09:48
- B6.9 21:24 21:27 21:29

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Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2018/09/21Kp5 (G1)
Number of spotless days in 2018:150
Current stretch spotless days:10

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