Sunspot drawing of 1973-3-31

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https://doi.org/10.7891/e-manuscripta-97383



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1973-03-31
08:30
Hs 1304.5:5026
https://doi.org/10.7891/e-manuscripta-97383
Observer : Araldo Pittini
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
77 8 7 H 7.5 145.2
79 34 33 E -5.5 79.5
81 4 9 J 11.9 38.1
82 4 5 B 8.9 137.1
4 50 54