Sunspot drawing of 1973-7-31

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https://doi.org/10.7891/e-manuscripta-97353



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1973-07-31
07:00
Hs 1304.5:5133
https://doi.org/10.7891/e-manuscripta-97353
Observer : Araldo Pittini
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
158 17 C -5.2 290.3
160 1 A 16.4 266.0
161 1 A 14.1 267.3
3 19