Sunspot drawing of 1976-4-18

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https://doi.org/10.7891/e-manuscripta-98321



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1976-04-18
07:00
Hs 1304.5:5966
https://doi.org/10.7891/e-manuscripta-98321
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
15 4 H 1.7 209.3
17 4 J 4.4 138.3
18 11 B -10.0 124.7
3 19