Sunspot drawing of 1981-5-28

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https://doi.org/10.7891/e-manuscripta-139157



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1981-05-28
06:45
Hs 1304.6:123
https://doi.org/10.7891/e-manuscripta-139157
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
254 38 35 D 3 25
256 33 28 D 17 48
257 1 2 A 14 15
258 1 2 A -13 27
259 4 2 B 8 28
260 15 17 D -6 342
261 1 3 J 15 311
7 93 89