2016 Jul 21 1900 UTC
Sunspot Group Classification Results
Number of Detected Sunspot Groups :           1

Group Index :       1
Ratio of magnetic polarity (+/-) :     0.906845
More than one magnetic neutral line is found
Number of Significant Neutral Lines :           4
[ Z-Class Determination ]
Number of spots :           4
Number of spots with penumbra :           4
Longitudinal extent of this spot group (deg) :      15.3922
Z-Class : F
[ p-Class Determination ]
Asymmetry factor of penumbral shape :      36.4147 (criterion : 25)
N-S diameter of largest penumbra (deg) :       3.1967115 (criterion : 2.5 deg)
Ratio of umbral area to spot area :     0.152672
p-Class : k
[ c-Class Determination ]
Number of spots :           4
Area ratio (spots/group) :     0.554540
Number of spots with penumbra :           4
c-Class :c
McIntosh Class : Fkc
[ Magnetic Class Determination ]
Magnetic Class : Beta-Gamma