2021 Sep 20 1800 UTC
Sunspot Group Classification Results
Number of Detected Sunspot Groups :           3

Group Index :       1
Ratio of magnetic polarity (+/-) :     0.571429
Only one magnetic neutral line is found
Roughness of the only magnetic neutral line :      1.55556
[ Z-Class Determination ]
Number of spots :           5
Number of spots with penumbra :           2
Z-Class : C
[ p-Class Determination ]
Asymmetry factor of penumbral shape :      66.4796 (criterion : 50)
N-S diameter of largest penumbra (deg) :      0.38386730 (criterion : 2.5 deg)
Ratio of umbral area to spot area :    0.0909091
p-Class : a
[ c-Class Determination ]
Number of spots :           5
Area ratio (spots/group) :     0.408451
Number of spots with penumbra :           2
c-Class :i
McIntosh Class : Cai
[ Magnetic Class Determination ]
Magnetic Class : Beta

Group Index :       2
Ratio of magnetic polarity (+/-) :     0.350000
Only one magnetic neutral line is found
Roughness of the only magnetic neutral line :      1.25000
[ Z-Class Determination ]
Number of spots :           4
Number of spots with penumbra :           1
Z-Class : C
[ p-Class Determination ]
Asymmetry factor of penumbral shape :      36.2625 (criterion : 50)
N-S diameter of largest penumbra (deg) :      0.62425873 (criterion : 2.5 deg)
Ratio of umbral area to spot area :     0.173913
p-Class : s
[ c-Class Determination ]
Number of spots :           4
Area ratio (spots/group) :     0.169903
Number of spots with penumbra :           1
c-Class :o
McIntosh Class : Cso
[ Magnetic Class Determination ]
Magnetic Class : Beta

Group Index :       3
Ratio of magnetic polarity (+/-) :     0.338000
Only one magnetic neutral line is found
Roughness of the only magnetic neutral line :      1.92593
[ Z-Class Determination ]
Number of spots :           3
Number of spots with penumbra :           2
Longitudinal extent of this spot group (deg) :      11.7451
Z-Class : E
[ p-Class Determination ]
Asymmetry factor of penumbral shape :      42.7690 (criterion : 25)
N-S diameter of largest penumbra (deg) :       3.4182914 (criterion : 2.5 deg)
Ratio of umbral area to spot area :     0.121739
p-Class : k
[ c-Class Determination ]
Number of spots :           3
Area ratio (spots/group) :     0.810526
Number of spots with penumbra :           2
c-Class :i
McIntosh Class : Eki
[ Magnetic Class Determination ]
Magnetic Class : Beta