Percentages of groups with BGGs of different star formation properties vs. group luminosity for groups from different luminosity classes and for single galaxies (S), as shown in the figure. The red line shows the percentages of quenched BGGs and the dark red dashed line shows the percentages of RSF BGGs. The blue line shows the percentages of BSF BGGs. The dotted, dashed, and dot-dashed lines show the changes in percentages if SFR limits logSFR = −0.6 and logSFR = −0.4 were used. The LL2.5 group sample in this figure is a test sample, to which is added 10% of randomly chosen single galaxies.