condition mean min max ZT0-3 80.92838333333333 62.188950000000006 111.02199999999999 ZT4-7 87.44215 87.44215 87.44215 ZT8-11 66.7506 66.7506 66.7506 ZT12-15 67.904425 51.550799999999995 84.25805 ZT16-19 54.8393 54.8393 54.8393 ZT20-23 71.22245 71.22245 71.22245