condition mean min max ZT0-3 273.95 273.95 273.95 ZT4-7 180.8 180.8 180.8 ZT8-11 205.8 205.8 205.8 ZT12-15 169.14999999999998 169.14999999999998 169.14999999999998 ZT16-19 215.45 215.45 215.45 ZT20-23 284.95 284.95 284.95