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Sunspot region AR13815

Number of
sunspots		 Size Class Magn. Class Spot Location
2024/09/06 31 40 EKO S30E23
2024/09/07 16 200 ESO S30E09
2024/09/08 5 170 CSO S28E01
2024/09/09 2 140 HSX S30W14
2024/09/10 1 130 HSX S30W27
2024/09/11 1 130 HSX S25W45
2024/09/12 1 140 HSX S28W52
2024/09/13 1 40 HSX S25W69
2024/09/14 1 120 HSX S24W83
2024/09/15 1 120 HSX S24W97
M
2

The top 2 solar flares from sunspot region 13815

Start Maximum End
1M2.12024/09/1304:3704:4004:46
2M1.62024/09/0706:1707:4909:17
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Last X-flare2025/12/08X1.1
Last M-flare2025/12/31M7.11
Last geomagnetic storm2026/01/10Kp6 (G2)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
December 2025124 +32.2
January 2026102.5 -21.5
Last 30 days99.7 -8.9

This day in history*

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*since 1994

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