2015 Oct 03 1900 UTC Sunspot Group Classification Results Number of Detected Sunspot Groups : 1 Group Index : 1 Ratio of magnetic polarity (+/-) : 1.03808 Only one magnetic neutral line is found Roughness of the only magnetic neutral line : 1.41860 [ Z-Class Determination ] Number of spots : 4 Number of spots with penumbra : 1 Z-Class : C [ p-Class Determination ] Asymmetry factor of penumbral shape : 42.6915 (criterion : 25) N-S diameter of largest penumbra (deg) : 1.4890870 (criterion : 2.5 deg) Ratio of umbral area to spot area : 0.108974 p-Class : a [ c-Class Determination ] Number of spots : 4 Area ratio (spots/group) : 0.484487 Number of spots with penumbra : 1 c-Class :i McIntosh Class : Cai [ Magnetic Class Determination ] Magnetic Class : Beta