2021 Apr 18 2000 UTC
Sunspot Group Classification Results
Number of Detected Sunspot Groups :           1

Group Index :       1
Ratio of magnetic polarity (+/-) :     0.252000
Only one magnetic neutral line is found
Roughness of the only magnetic neutral line :      1.83871
[ Z-Class Determination ]
Number of spots :           6
Number of spots with penumbra :           3
Longitudinal extent of this spot group (deg) :      7.25271
Z-Class : D
[ p-Class Determination ]
Asymmetry factor of penumbral shape :      40.6337 (criterion : 50)
N-S diameter of largest penumbra (deg) :      0.96371550 (criterion : 2.5 deg)
Ratio of umbral area to spot area :     0.212121
p-Class : s
[ c-Class Determination ]
Number of spots :           6
Area ratio (spots/group) :     0.267857
Number of spots with penumbra :           3
c-Class :o
McIntosh Class : Dso
[ Magnetic Class Determination ]
Magnetic Class : Beta