Sunspot drawing of 1971-4-25

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https://doi.org/10.7891/e-manuscripta-96857



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1971-04-25
07:00
Hs 1304.5:4438
https://doi.org/10.7891/e-manuscripta-96857
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
132 14 B -10.8 44.7
133 9 C -12.5 34.7
134 6 B 6.1 29.6
135 2 A -4.9 343.5
4 31