Sunspot drawing of 1970-10-21

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https://doi.org/10.7891/e-manuscripta-96580



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1970-10-21
07:15
Hs 1304.5:4290
https://doi.org/10.7891/e-manuscripta-96580
Observer : Sergio Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
440 3 J 9.7 47.5
441 3 J 16.9 29.2
446 17 D 8.7 33.6
447 21 G 11.4 341.1
448 12 H 13.8 299.5
449 3 J -6.8 284.0
6 59