Sunspot drawing of 1971-10-2

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https://doi.org/10.7891/e-manuscripta-96717



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1971-10-02
07:30
Hs 1304.5:4588
https://doi.org/10.7891/e-manuscripta-96717
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
280 6 H -6.4 131.4
281 14 B -5.0 119.4
282 21 C 11.5 78.7
3 41