condition mean min max ZT0-3 83.25 83.25 83.25 ZT4-7 152.5 152.5 152.5 ZT8-11 185.9 185.9 185.9 ZT12-15 176.10000000000002 176.10000000000002 176.10000000000002 ZT16-19 120.69999999999999 120.69999999999999 120.69999999999999 ZT20-23 119.15 119.15 119.15