2017 Aug 16 2100 UTC Sunspot Group Classification Results Number of Detected Sunspot Groups : 1 Group Index : 1 Ratio of magnetic polarity (+/-) : 1.56028 More than one magnetic neutral line is found Number of Significant Neutral Lines : 4 [ Z-Class Determination ] Number of spots : 12 Number of spots with penumbra : 6 Longitudinal extent of this spot group (deg) : 15.4121 Z-Class : F [ p-Class Determination ] Asymmetry factor of penumbral shape : 30.8393 (criterion : 25) N-S diameter of largest penumbra (deg) : 2.0153004 (criterion : 2.5 deg) Ratio of umbral area to spot area : 0.156863 p-Class : a [ c-Class Determination ] Number of spots : 12 Area ratio (spots/group) : 0.244929 Number of spots with penumbra : 6 c-Class :o McIntosh Class : Fao [ Magnetic Class Determination ] Magnetic Class : Beta-Gamma