Sunspot drawing of 1970-10-20

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https://doi.org/10.7891/e-manuscripta-96586



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1970-10-20
12:45
Hs 1304.5:4289
https://doi.org/10.7891/e-manuscripta-96586
Observer : Sergio Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
440 5 C 9.0 49.7
441 3 J 17.1 30.7
446 24 D 9.1 33.6
447 21 G 11.0 339.9
448 8 H 13.4 299.7
449 3 J -6.8 283.3
6 64