Sunspot drawing of 1975-7-21

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https://doi.org/10.7891/e-manuscripta-98004



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1975-07-21
07:30
Hs 1304.5:5739
https://doi.org/10.7891/e-manuscripta-98004
Observer : Araldo Pittini
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
59 2 A -10.9 215.4
61 12 J -6.8 168.6
65 3 J 7.9 67.7
3 17