condition mean min max ZT0-3 292.4 292.4 292.4 ZT4-7 203.5 203.5 203.5 ZT8-11 161.7 161.7 161.7 ZT12-15 229.55 229.55 229.55 ZT16-19 287.2 287.2 287.2 ZT20-23 344.25 344.25 344.25