2015 Aug 21 2100 UTC Sunspot Group Classification Results Number of Detected Sunspot Groups : 2 Group Index : 1 Ratio of magnetic polarity (+/-) : 1.26549 Only one magnetic neutral line is found Roughness of the only magnetic neutral line : 1.30000 [ Z-Class Determination ] Number of spots : 3 Number of spots with penumbra : 1 Z-Class : C [ p-Class Determination ] Asymmetry factor of penumbral shape : 48.1812 (criterion : 50) N-S diameter of largest penumbra (deg) : 0.49295287 (criterion : 2.5 deg) Ratio of umbral area to spot area : 0.117647 p-Class : s [ c-Class Determination ] Number of spots : 3 Area ratio (spots/group) : 0.430769 Number of spots with penumbra : 1 c-Class :i McIntosh Class : Csi [ Magnetic Class Determination ] Magnetic Class : Beta Group Index : 2 Ratio of magnetic polarity (+/-) : 0.486500 More than one magnetic neutral line is found Number of Significant Neutral Lines : 1 Roughness of the longest magnetic neutral line : 9.14815 [ Z-Class Determination ] Number of spots : 8 Number of spots with penumbra : 2 Longitudinal extent of this spot group (deg) : 13.3204 Z-Class : E [ p-Class Determination ] Asymmetry factor of penumbral shape : 60.7217 (criterion : 25) N-S diameter of largest penumbra (deg) : 6.2270543 (criterion : 2.5 deg) Ratio of umbral area to spot area : 0.120292 p-Class : k [ c-Class Determination ] Number of spots : 8 Area ratio (spots/group) : 0.458921 Number of spots with penumbra : 2 c-Class :i McIntosh Class : Eki [ Magnetic Class Determination ] Magnetic Class : Beta-Gamma-Delta