2021 Sep 28 1900 UTC
Sunspot Group Classification Results
Number of Detected Sunspot Groups :           4

Group Index :       1
Ratio of magnetic polarity (+/-) :     0.168750
[ 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

Group Index :       2
Ratio of magnetic polarity (+/-) :     0.755102
More than one magnetic neutral line is found
Number of Significant Neutral Lines :           1
Roughness of the longest magnetic neutral line :      1.57895
[ Z-Class Determination ]
Number of spots :           4
Number of spots with penumbra :           1
Z-Class : C
[ p-Class Determination ]
Asymmetry factor of penumbral shape :      75.7262 (criterion : 50)
N-S diameter of largest penumbra (deg) :      0.40231212 (criterion : 2.5 deg)
Ratio of umbral area to spot area :    0.0869565
p-Class : a
[ c-Class Determination ]
Number of spots :           4
Area ratio (spots/group) :     0.217391
Number of spots with penumbra :           1
c-Class :o
McIntosh Class : Cao
[ Magnetic Class Determination ]
Magnetic Class : Beta

Group Index :       3
Ratio of magnetic polarity (+/-) :     0.285714
Only one magnetic neutral line is found
Roughness of the only magnetic neutral line :      1.23077
[ Z-Class Determination ]
Number of spots :           1
Number of spots with penumbra :           1
Z-Class : H
[ p-Class Determination ]
Asymmetry factor of penumbral shape :      47.6516 (criterion : 50)
N-S diameter of largest penumbra (deg) :      0.24518654 (criterion : 2.5 deg)
Ratio of umbral area to spot area :     0.222222
p-Class : s
[ c-Class Determination ]
Number of spots :           1
c-Class :x
McIntosh Class : Hsx
[ Magnetic Class Determination ]
Magnetic Class : Alpha

Group Index :       4
Ratio of magnetic polarity (+/-) :     0.227273
Only one magnetic neutral line is found
Roughness of the only magnetic neutral line :      1.42857
[ Z-Class Determination ]
Number of spots :           3
Number of spots with penumbra :           2
Z-Class : C
[ p-Class Determination ]
Asymmetry factor of penumbral shape :      89.9734 (criterion : 50)
N-S diameter of largest penumbra (deg) :      0.79932324 (criterion : 2.5 deg)
Ratio of umbral area to spot area :     0.200000
p-Class : a
[ c-Class Determination ]
Number of spots :           3
Area ratio (spots/group) :     0.238095
Number of spots with penumbra :           2
c-Class :o
McIntosh Class : Cao
[ Magnetic Class Determination ]
Magnetic Class : Beta