condition mean min max ZT0-3 173.3 173.3 173.3 ZT4-7 188.7 188.7 188.7 ZT8-11 106.75 106.75 106.75 ZT12-15 100.9 100.9 100.9 ZT16-19 113.0 113.0 113.0 ZT20-23 146.39999999999998 146.39999999999998 146.39999999999998