Sunspot drawing of 1987-8-15

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https://doi.org/10.7891/e-manuscripta-143007



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1987-08-15
08:30
Hs 1304.6:1987
https://doi.org/10.7891/e-manuscripta-143007
Observer : Marco Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
80 8 13 C -26 282
82 11 22 C -30 248
83 6 16 D -23 239
3 25 51