Sunspot drawing of 1990-6-18

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https://doi.org/10.7891/e-manuscripta-145174



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1990-06-18
09:00
Hs 1304.6:2874
https://doi.org/10.7891/e-manuscripta-145174
Observer : Michele Bianda
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
310 4 9 C -14 314
312 5 6 C 29 316
322 5 9 D -30 282
323 17 15 C 7 279
324 9 11 D -9 258
328 2 1 A -36 291
329 4 3 B 12 278
7 46 54