Sunspot drawing of 1977-6-12

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https://doi.org/10.7891/e-manuscripta-98865



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1977-06-12
07:00
Hs 1304.5:6309
https://doi.org/10.7891/e-manuscripta-98865
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
51 15 C -24.2 63.6
53 5 C -21.1 2.9
2 20