Sunspot drawing of 1987-8-27

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https://doi.org/10.7891/e-manuscripta-142773



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1987-08-27
16:30
Hs 1304.6:1998
https://doi.org/10.7891/e-manuscripta-142773
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
88 5 7 A 16 122
89 3 10 D 20 209
2 8 17