Sunspot drawing of 1971-5-28

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https://doi.org/10.7891/e-manuscripta-96820



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1971-05-28
08:00
Hs 1304.5:4465
https://doi.org/10.7891/e-manuscripta-96820
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
163 12 D 10.9 337.6
164 28 D -8.6 27.1
166 4 B 10.7 326.9
167 6 C 12.9 273.0
168 2 A 9.0 267.4
5 52