Sunspot drawing of 1977-9-12

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https://doi.org/10.7891/e-manuscripta-98786



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1977-09-12
07:30
Hs 1304.5:6393
https://doi.org/10.7891/e-manuscripta-98786
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
103 3 A 23.6 314.6
108 15 D 15.8 205.2
109 42 E 7.6 197.6
3 60