condition mean min max ZT0-3 264.3 264.3 264.3 ZT4-7 244.3 244.3 244.3 ZT8-11 191.7 191.7 191.7 ZT12-15 260.25 260.25 260.25 ZT16-19 365.70000000000005 365.70000000000005 365.70000000000005 ZT20-23 333.4 333.4 333.4