Sunspot drawing of 1973-9-20

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https://doi.org/10.7891/e-manuscripta-97377



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1973-09-20
11:00
Hs 1304.5:5182
https://doi.org/10.7891/e-manuscripta-97377
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
186 6 C 13.8 326.3
191 2 B 4.8 282.5
192 4 J 5.3 258.7
193 2 A 14.0 256.0
4 14