Basic Information
Number:
Date:
Standard Time:
International time:
P:
B_0:
L_0:
L:
  N S N+S
g
f
R
k R
weather:
visibility:
Note:
Observer:
Sunspot Information
No. Sunspot number longitude latitude type a a' radius Sunspot number
1 637 58.5 8 C 0.8 0.7 74 4
2 638 -34 -5 D 7.3 5 50 15
3 639 -53 1.5 B 0.2 0.1 70 5
4 640 49.5 17 B 0.1 0.1 67 4
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