2021 Apr 13 1000 UTC
Sunspot Group Classification Results
Number of Detected Sunspot Groups :           1

Group Index :       1
Ratio of magnetic polarity (+/-) :      1.35016
Only one magnetic neutral line is found
Roughness of the only magnetic neutral line :      1.35556
[ Z-Class Determination ]
Number of spots :           4
Number of spots with penumbra :           1
Z-Class : C
[ p-Class Determination ]
Asymmetry factor of penumbral shape :      34.0283 (criterion : 50)
N-S diameter of largest penumbra (deg) :      0.62820030 (criterion : 2.5 deg)
Ratio of umbral area to spot area :     0.116279
p-Class : s
[ c-Class Determination ]
Number of spots :           4
Area ratio (spots/group) :     0.156109
Number of spots with penumbra :           1
c-Class :o
McIntosh Class : Cso
[ Magnetic Class Determination ]
Magnetic Class : Beta