condition mean min max ZT0-3 118.35 118.35 118.35 ZT4-7 112.4 112.4 112.4 ZT8-11 75.55 75.55 75.55 ZT12-15 89.1 89.1 89.1 ZT16-19 102.55 102.55 102.55 ZT20-23 146.2 146.2 146.2