2015 Dec 31 1300 UTC
Sunspot Group Classification Results
Number of Detected Sunspot Groups :           1

Group Index :       1
Ratio of magnetic polarity (+/-) :      5.29661
[ Z-Class Determination ]
Number of spots :           2
Number of spots with penumbra :           2
Longitudinal extent of this spot group (deg) :      2.54495
Z-Class : D
[ p-Class Determination ]
Asymmetry factor of penumbral shape :      44.1354 (criterion : 25)
N-S diameter of largest penumbra (deg) :       2.1115672 (criterion : 2.5 deg)
Ratio of umbral area to spot area :     0.170068
p-Class : a
[ c-Class Determination ]
Number of spots :           2
Area ratio (spots/group) :     0.666667
Number of spots with penumbra :           2
c-Class :i
McIntosh Class : Dai
[ Magnetic Class Determination ]
Magnetic Class : Alpha