2017 May 21 2100 UTC Sunspot Group Classification Results Number of Detected Sunspot Groups : 3 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 201705212100 1 - 6.6 - 4.5 2 1 1.2 0.37 0.52 0.00 100.00 57.82 0 -99.00 Cai Alpha 201705212100 2 11.2 0.5 1 1 0.5 0.50 -99.00 0.00 100.00 48.77 0 -99.00 Hsx Alpha 201705212100 3 13.6 29.9 2 2 4.3 0.51 0.46 0.29 0.00 51.05 0 -99.00 Dai Alpha