Sunspot drawing of 1987-6-24

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https://doi.org/10.7891/e-manuscripta-142976



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1987-06-24
07:30
Hs 1304.6:1937
https://doi.org/10.7891/e-manuscripta-142976
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
58 2 4 J -31 255
59 15 36 C 19 261
2 17 40