> summary(sem.didelphis) rich.end ab.end rich.n.end ab.n.end. paisag Min. :0.000 Min. : 0.00 Min. :1.00 Min. : 5.00 tap:15 1st Qu.:2.000 1st Qu.: 8.25 1st Qu.:2.00 1st Qu.:11.00 cau:20 Median :4.000 Median :21.50 Median :2.25 Median :19.00 rg :15 Mean :3.830 Mean :23.28 Mean :2.41 Mean :21.96 3rd Qu.:5.375 3rd Qu.:33.00 3rd Qu.:3.00 3rd Qu.:30.75 Max. :7.500 Max. :60.00 Max. :6.00 Max. :57.00 > summary(dri[1:2]) paisag area tap:15 Min. : 1.95 cau:20 1st Qu.: 6.75 rg :15 Median : 19.64 Mean : 46.10 3rd Qu.: 43.36 Max. :374.32