2021 Aug 16 2100 UTC Sunspot Group Classification Results Number of Detected Sunspot Groups : 1 Group Index : 1 Ratio of magnetic polarity (+/-) : 0.789773 Only one magnetic neutral line is found Roughness of the only magnetic neutral line : 1.29167 [ Z-Class Determination ] Number of spots : 3 Number of spots with penumbra : 2 Longitudinal extent of this spot group (deg) : 2.75974 Z-Class : D [ p-Class Determination ] Asymmetry factor of penumbral shape : 33.2984 (criterion : 50) N-S diameter of largest penumbra (deg) : 0.37488691 (criterion : 2.5 deg) Ratio of umbral area to spot area : 0.157895 p-Class : s [ c-Class Determination ] Number of spots : 3 Area ratio (spots/group) : 0.607143 Number of spots with penumbra : 2 c-Class :i McIntosh Class : Dsi [ Magnetic Class Determination ] Magnetic Class : Beta