Sunspot drawing of 1973-3-13

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https://doi.org/10.7891/e-manuscripta-97469



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1973-03-13
13:15
Hs 1304.5:5008
https://doi.org/10.7891/e-manuscripta-97469
Observer : Araldo Pittini
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
64 5 J -18.5 16.1
68 18 C 11.5 26.3
69 27 D -7.4 339.9
70 30 E -13.2 329.2
4 80