2021 Apr 15 1900 UTC
Sunspot Group Classification Results
Number of Detected Sunspot Groups :           3

Group Index :       1
Ratio of magnetic polarity (+/-) :      63.8333
[ Z-Class Determination ]
Number of spots :           4
Number of spots with penumbra :           1
Z-Class : C
[ p-Class Determination ]
Asymmetry factor of penumbral shape :      58.8009 (criterion : 50)
N-S diameter of largest penumbra (deg) :      0.12826044 (criterion : 2.5 deg)
Ratio of umbral area to spot area :     0.200000
p-Class : a
[ c-Class Determination ]
Number of spots :           4
Area ratio (spots/group) :     0.138211
Number of spots with penumbra :           1
c-Class :o
McIntosh Class : Cao
[ Magnetic Class Determination ]
Magnetic Class : Alpha

Group Index :       2
Ratio of magnetic polarity (+/-) :     0.238532
Only one magnetic neutral line is found
Roughness of the only magnetic neutral line :      1.68750
[ Z-Class Determination ]
Number of spots :           1
Number of spots with penumbra :           1
Z-Class : H
[ p-Class Determination ]
Asymmetry factor of penumbral shape :      58.4836 (criterion : 50)
N-S diameter of largest penumbra (deg) :      0.25174185 (criterion : 2.5 deg)
Ratio of umbral area to spot area :     0.250000
p-Class : a
[ c-Class Determination ]
Number of spots :           1
c-Class :x
McIntosh Class : Hax
[ Magnetic Class Determination ]
Magnetic Class : Alpha

Group Index :       3
Ratio of magnetic polarity (+/-) :     0.214286
Only one magnetic neutral line is found
Roughness of the only magnetic neutral line :      1.09091
[ Z-Class Determination ]
Number of spots :           1
Number of spots with penumbra :           0
Z-Class : A
[ p-Class Determination ]
p-Class : x
[ c-Class Determination ]
Number of spots :           1
c-Class :x
McIntosh Class : Axx
[ Magnetic Class Determination ]
Magnetic Class : Alpha