Sunspot drawing of 1977-9-17

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https://doi.org/10.7891/e-manuscripta-98721



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1977-09-17
09:00
Hs 1304.5:6398
https://doi.org/10.7891/e-manuscripta-98721
Observer : Araldo Pittini
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
108 8 D 16.8 207.1
109 45 E 7.6 198.5
110 2 A 24.6 113.4
3 55