2015 Aug 28 1900 UTC Sunspot Group Classification Results Number of Detected Sunspot Groups : 1 Group Index : 1 Ratio of magnetic polarity (+/-) : 0.655462 More than one magnetic neutral line is found Number of Significant Neutral Lines : 2 [ Z-Class Determination ] Number of spots : 5 Number of spots with penumbra : 3 Longitudinal extent of this spot group (deg) : 15.6729 Z-Class : F [ p-Class Determination ] Asymmetry factor of penumbral shape : 57.0640 (criterion : 25) N-S diameter of largest penumbra (deg) : 4.7453627 (criterion : 2.5 deg) Ratio of umbral area to spot area : 0.131579 p-Class : k [ c-Class Determination ] Number of spots : 5 Area ratio (spots/group) : 0.405063 Number of spots with penumbra : 3 c-Class :c McIntosh Class : Fkc [ Magnetic Class Determination ] Magnetic Class : Beta-Gamma