Sunspot drawing of 1972-2-21

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https://doi.org/10.7891/e-manuscripta-97005



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1972-02-21
11:15
Hs 1304.5:4684
https://doi.org/10.7891/e-manuscripta-97005
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
39 3 J -18.2 95.7
41 1 A 24.1 94.6
43 2 A -9.8 61.4
45 6 B -21.8 86.9
46 6 J -6.5 60.8
48 23 E -14.4 43.7
50 44 E 11.8 17.7
51 40 D 6.5 24.9
53 1 A 17.2 109.0
54 1 A 8.9 66.3
55 32 E -18.7 343.6
56 2 A -12.3 322.0
12 161