Viewing archive of Saturday, 4 December 1999

Sunspot numberNew regionsBackground fluxMaximum fluxC
78 -290B7.1C4.313

Solar flares

RegionStartMaximumEnd
-C1.5 04:2104:2704:35
-C1.7 17:4517:5017:54
8788C4.3 21:1621:2721:51

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Last X-flare:2017/09/10X8.2
Last M-flare:2017/10/20M1.0
Last geomagnetic storm:2019/10/26Kp5 (G1)
Number of spotless days in 2019:260
Current stretch spotless days:33

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