condition mean min max ZT0-3 150.23433550750002 140.396397215 160.0722738 ZT4-7 24.380351041 14.334960867 34.425741215 ZT8-11 25.2781839475 14.0428202 36.513547695 ZT12-15 43.9531499375 43.113625215 44.79267466 ZT16-19 60.460774395 54.911390925 66.010157865 ZT20-23 90.09833494 86.088741245 94.10792863500001