condition mean min max ZT0-3 68.80890729000001 65.25240639 72.36540819 ZT4-7 13.78135059975 9.159456477500001 18.403244722 ZT8-11 13.74750773375 8.1079530425 19.387062425 ZT12-15 30.1002119925 25.916871139999998 34.283552845 ZT16-19 42.8429149975 41.76890949 43.916920505 ZT20-23 39.41313377 36.20041122 42.62585632