Sunspot drawing of 1986-7-31

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https://doi.org/10.7891/e-manuscripta-142069



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1986-07-31
14:30
Hs 1304.6:1660
https://doi.org/10.7891/e-manuscripta-142069
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
45 1 4 H 10 233
46 6 10 C 8 229
2 7 14