Sunspot drawing of 1977-6-18

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https://doi.org/10.7891/e-manuscripta-98733



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1977-06-18
07:00
Hs 1304.5:6314
https://doi.org/10.7891/e-manuscripta-98733
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
53 3 J -21.8 2.9
55 1 A 26.0 224.5
56 1 A -8.7 230.3
3 5