2017 Aug 21 0000 UTC Sunspot Group Classification Results Number of Detected Sunspot Groups : 2 Group Index : 1 Ratio of magnetic polarity (+/-) : 0.953569 More than one magnetic neutral line is found Number of Significant Neutral Lines : 2 [ Z-Class Determination ] Number of spots : 9 Number of spots with penumbra : 6 Longitudinal extent of this spot group (deg) : 21.2923 Z-Class : F [ p-Class Determination ] Asymmetry factor of penumbral shape : 20.6169 (criterion : 25) N-S diameter of largest penumbra (deg) : 2.5758923 (criterion : 2.5 deg) Ratio of umbral area to spot area : 0.122302 p-Class : h [ c-Class Determination ] Number of spots : 9 Area ratio (spots/group) : 0.402062 Number of spots with penumbra : 6 c-Class :c McIntosh Class : Fhc [ Magnetic Class Determination ] Magnetic Class : Beta-Gamma Group Index : 2 Ratio of magnetic polarity (+/-) : 1.78855 More than one magnetic neutral line is found Number of Significant Neutral Lines : 2 [ Z-Class Determination ] Number of spots : 2 Number of spots with penumbra : 1 Z-Class : C [ p-Class Determination ] Asymmetry factor of penumbral shape : 53.2763 (criterion : 50) N-S diameter of largest penumbra (deg) : 1.9744271 (criterion : 2.5 deg) Ratio of umbral area to spot area : 0.147059 p-Class : a [ c-Class Determination ] Number of spots : 2 Area ratio (spots/group) : 0.519084 Number of spots with penumbra : 1 c-Class :i McIntosh Class : Cai [ Magnetic Class Determination ] Magnetic Class : Beta-Gamma