condition mean min max ZT0-3 84.4 84.4 84.4 ZT4-7 91.5 91.5 91.5 ZT8-11 114.65 114.65 114.65 ZT12-15 121.6 121.6 121.6 ZT16-19 107.69999999999999 107.69999999999999 107.69999999999999 ZT20-23 54.0 54.0 54.0