condition mean min max ZT0-3 72.65 72.65 72.65 ZT4-7 108.6 108.6 108.6 ZT8-11 115.2 115.2 115.2 ZT12-15 119.0 119.0 119.0 ZT16-19 118.2 118.2 118.2 ZT20-23 105.7 105.7 105.7