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

Group Index :       1
Ratio of magnetic polarity (+/-) :      2.07065
Only one magnetic neutral line is found
Roughness of the only magnetic neutral line :      1.60465
[ Z-Class Determination ]
Number of spots :           2
Number of spots with penumbra :           1
Z-Class : C
[ p-Class Determination ]
Asymmetry factor of penumbral shape :      17.9410 (criterion : 25)
N-S diameter of largest penumbra (deg) :       2.2664234 (criterion : 2.5 deg)
Ratio of umbral area to spot area :     0.176923
p-Class : s
[ c-Class Determination ]
Number of spots :           2
Area ratio (spots/group) :     0.762178
Number of spots with penumbra :           1
c-Class :i
McIntosh Class : Csi
[ Magnetic Class Determination ]
Magnetic Class : Beta