Sunspot drawing of 1985-4-21

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https://doi.org/10.7891/e-manuscripta-141561



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1985-04-21
07:30
Hs 1304.6:1278
https://doi.org/10.7891/e-manuscripta-141561
Observer : Marco Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
35 4 2 B -10 269
37 10 15 B 5 231
2 14 17