2015 Dec 31 1600 UTC
Sunspot Group Classification Results
Number of Detected Sunspot Groups :           1

Group Index :       1
Ratio of magnetic polarity (+/-) :      5.38793
[ Z-Class Determination ]
Number of spots :           3
Number of spots with penumbra :           3
Longitudinal extent of this spot group (deg) :      2.75595
Z-Class : D
[ p-Class Determination ]
Asymmetry factor of penumbral shape :      39.8782 (criterion : 25)
N-S diameter of largest penumbra (deg) :       2.0052913 (criterion : 2.5 deg)
Ratio of umbral area to spot area :     0.153153
p-Class : a
[ c-Class Determination ]
Number of spots :           3
Area ratio (spots/group) :     0.665306
Number of spots with penumbra :           3
c-Class :c
McIntosh Class : Dac
[ Magnetic Class Determination ]
Magnetic Class : Alpha