2021 Apr 28 1900 UTC
Sunspot Group Classification Results
Number of Detected Sunspot Groups :           2

Group Index :       1
Ratio of magnetic polarity (+/-) :      1.13765
More than one magnetic neutral line is found
Number of Significant Neutral Lines :           4
[ Z-Class Determination ]
Number of spots :           8
Number of spots with penumbra :           4
Longitudinal extent of this spot group (deg) :      20.7014
Z-Class : F
[ p-Class Determination ]
Asymmetry factor of penumbral shape :      50.5661 (criterion : 50)
N-S diameter of largest penumbra (deg) :       1.6947526 (criterion : 2.5 deg)
Ratio of umbral area to spot area :    0.0370370
p-Class : a
[ c-Class Determination ]
Number of spots :           8
Area ratio (spots/group) :     0.175385
Number of spots with penumbra :           4
c-Class :o
McIntosh Class : Fao
[ Magnetic Class Determination ]
Magnetic Class : Beta-Gamma

Group Index :       2
Ratio of magnetic polarity (+/-) :    0.0847458
[ Z-Class Determination ]
Number of spots :           1
Number of spots with penumbra :           1
Z-Class : H
[ p-Class Determination ]
Asymmetry factor of penumbral shape :      29.7807 (criterion : 50)
N-S diameter of largest penumbra (deg) :       1.0082573 (criterion : 2.5 deg)
Ratio of umbral area to spot area :     0.156863
p-Class : s
[ c-Class Determination ]
Number of spots :           1
c-Class :x
McIntosh Class : Hsx
[ Magnetic Class Determination ]
Magnetic Class : Alpha