Sunspot drawing of 1987-9-12

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https://doi.org/10.7891/e-manuscripta-143056



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1987-09-12
07:00
Hs 1304.6:2014
https://doi.org/10.7891/e-manuscripta-143056
Observer : Marco Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
92 15 20 D -22 340
95 6 6 B -26 277
96 1 1 A 23 244
97 5 6 J -32 230
4 27 33