Sunspot drawing of 1974-8-20

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https://doi.org/10.7891/e-manuscripta-97961



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1974-08-20
07:15
Hs 1304.5:5459
https://doi.org/10.7891/e-manuscripta-97961
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
134 4 C 8.8 326.0
135 3 J -14.3 256.5
138 3 J 1.4 182.4
139 1 A -4.9 245.1
4 11