Sunspot drawing of 1999-4-23

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https://doi.org/10.7891/e-manuscripta-150538



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1999-04-23
08:00
Hs 1304.6:5604
https://doi.org/10.7891/e-manuscripta-150538
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
94 8 8 B -20 145
97 17 24 D -14 107
99 4 5 B 33 156
3 29 37