2021 Oct 15 2000 UTC
Sunspot Group Classification Results
Number of Detected Sunspot Groups :           1

Group Index :       1
Ratio of magnetic polarity (+/-) :     0.861702
Only one magnetic neutral line is found
Roughness of the only magnetic neutral line :      1.32558
[ Z-Class Determination ]
Number of spots :           1
Number of spots with penumbra :           1
Z-Class : H
[ p-Class Determination ]
Asymmetry factor of penumbral shape :      26.4559 (criterion : 25)
N-S diameter of largest penumbra (deg) :       3.8448497 (criterion : 2.5 deg)
Ratio of umbral area to spot area :     0.162393
p-Class : k
[ c-Class Determination ]
Number of spots :           1
c-Class :x
McIntosh Class : Hkx
[ Magnetic Class Determination ]
Magnetic Class : Alpha