2019 Apr 13 1500 UTC
Sunspot Group Classification Results
Number of Detected Sunspot Groups :           1

Group Index :       1
Ratio of magnetic polarity (+/-) :     0.182333
[ Z-Class Determination ]
Number of spots :           4
Number of spots with penumbra :           1
Z-Class : C
[ p-Class Determination ]
Asymmetry factor of penumbral shape :      16.5027 (criterion : 25)
N-S diameter of largest penumbra (deg) :       3.7071810 (criterion : 2.5 deg)
Ratio of umbral area to spot area :     0.201141
p-Class : h
[ c-Class Determination ]
Number of spots :           4
Area ratio (spots/group) :     0.753799
Number of spots with penumbra :           1
c-Class :i
McIntosh Class : Chi
[ Magnetic Class Determination ]
Magnetic Class : Alpha