Sunspot drawing of 1988-5-18

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https://doi.org/10.7891/e-manuscripta-143653



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1988-05-18
10:00
Hs 1304.6:2204
https://doi.org/10.7891/e-manuscripta-143653
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
105 1 2 A 24 276
106 3 3 B 22 259
108 15 19 C -17 281
109 1 1 A -36 250
4 20 25