condition mean min max ZT0-3 162.3 162.3 162.3 ZT4-7 196.9 196.9 196.9 ZT8-11 220.89999999999998 220.89999999999998 220.89999999999998 ZT12-15 236.05 236.05 236.05 ZT16-19 260.2 260.2 260.2 ZT20-23 192.29999999999998 192.29999999999998 192.29999999999998