Sunspot drawing of 1977-2-18

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https://doi.org/10.7891/e-manuscripta-98683



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1977-02-18
07:30
Hs 1304.5:6223
https://doi.org/10.7891/e-manuscripta-98683
Observer : Araldo Pittini
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
14 12 D -42.5 156.6
18 2 A 3.9 143.6
19 5 B 19.6 145.3
21 6 J -19.1 57.1
4 25