Sunspot drawing of 1974-4-12

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https://doi.org/10.7891/e-manuscripta-97950



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1974-04-12
07:00
Hs 1304.5:5340
https://doi.org/10.7891/e-manuscripta-97950
Observer : Araldo Pittini
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
40 80 E -12.0 185.0
41 16 B -4.8 216.4
42 14 B -15.5 164.4
3 110