condition mean min max ZT0-3 0.12206610000000001 0.12206610000000001 0.12206610000000001 ZT4-7 0.10638285 0.10638285 0.10638285 ZT8-11 0.0431792 0.0431792 0.0431792 ZT12-15 0.087711 0.087711 0.087711 ZT16-19 0.34803150000000005 0.34803150000000005 0.34803150000000005 ZT20-23 0.09178415 0.09178415 0.09178415