Sunspot drawing of 1971-5-13

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https://doi.org/10.7891/e-manuscripta-96786



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1971-05-13
06:30
Hs 1304.5:4452
https://doi.org/10.7891/e-manuscripta-96786
Observer : Araldo Pittini
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
138 4 J 10.7 266.5
139 4 J 11.0 253.9
145 7 A 4.0 189.1
146 9 B 2.7 158.8
149 20 D 4.5 130.9
150 2 B -9.4 181.5
151 1 A 8.8 167.0
152 10 B 18.2 192.4
8 57