Sunspot drawing of 1971-6-12

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https://doi.org/10.7891/e-manuscripta-96887



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1971-06-12
07:30
Hs 1304.5:4480
https://doi.org/10.7891/e-manuscripta-96887
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
170 3 J 0.1 222.1
171 3 J -6.5 200.4
177 9 B 14.5 143.8
3 15