2021 Apr 20 1900 UTC Sunspot Group Classification Results Number of Detected Sunspot Groups : 4 Date G_Ind Lat Lon Num_Spot Num_Spot_Pen Lon_Ext N-S Ratio_Area Ratio_Um Ratio_Pol Assym Num_Neutral Rough Zpc Wilson 202104201900 1 16.1 -61.2 5 1 10.9 2.61 0.49 0.19 1.15 27.32 2 -99.00 Chi Beta-Gamma 202104201900 2 -23.9 12.0 3 3 6.1 0.51 0.21 0.24 0.34 53.06 1 1.51 Dao Beta 202104201900 3 -27.5 14.4 1 1 1.1 1.32 -99.00 0.16 81.40 29.09 0 -99.00 Hsx Alpha 202104201900 4 -20.2 67.8 1 1 2.1 1.34 -99.00 0.16 1.51 36.77 1 1.16 Hsx Alpha