Sunspot drawing of 1977-2-15

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https://doi.org/10.7891/e-manuscripta-98636



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1977-02-15
09:00
Hs 1304.5:6220
https://doi.org/10.7891/e-manuscripta-98636
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
14 18 E -41.5 157.3
18 14 D 3.0 139.1
19 9 B 22.0 141.1
21 4 J -19.5 56.5
4 45