2021 Sep 02 1800 UTC Sunspot Group Classification Results Number of Detected Sunspot Groups : 1 Group Index : 1 Ratio of magnetic polarity (+/-) : 1.89844 Only one magnetic neutral line is found Roughness of the only magnetic neutral line : 1.48980 [ Z-Class Determination ] Number of spots : 3 Number of spots with penumbra : 1 Z-Class : C [ p-Class Determination ] Asymmetry factor of penumbral shape : 24.7843 (criterion : 25) N-S diameter of largest penumbra (deg) : 2.0393406 (criterion : 2.5 deg) Ratio of umbral area to spot area : 0.143939 p-Class : s [ c-Class Determination ] Number of spots : 3 Area ratio (spots/group) : 0.498701 Number of spots with penumbra : 1 c-Class :i McIntosh Class : Csi [ Magnetic Class Determination ] Magnetic Class : Beta