condition mean min max ZT0-3 178.89999999999998 178.89999999999998 178.89999999999998 ZT4-7 79.3 79.3 79.3 ZT8-11 104.25 104.25 104.25 ZT12-15 163.2 163.2 163.2 ZT16-19 353.8 353.8 353.8 ZT20-23 318.54999999999995 318.54999999999995 318.54999999999995