Sunspot drawing of 1987-6-29

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https://doi.org/10.7891/e-manuscripta-142919



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1987-06-29
09:00
Hs 1304.6:1941
https://doi.org/10.7891/e-manuscripta-142919
Observer : Marco Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
59 2 6 C 20 262
61 6 8 B 29 155
63 5 2 B -28 217
3 13 16