Sunspot drawing of 1987-3-15

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https://doi.org/10.7891/e-manuscripta-143058



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1987-03-15
09:00
Hs 1304.6:1852
https://doi.org/10.7891/e-manuscripta-143058
Observer : Marco Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
17 1 3 J -32 78
18 1 1 A -26 120
2 2 4