condition mean min max ZT0-3 101.35 101.35 101.35 ZT4-7 169.0 169.0 169.0 ZT8-11 187.5 187.5 187.5 ZT12-15 167.5 167.5 167.5 ZT16-19 187.5 187.5 187.5 ZT20-23 121.05000000000001 121.05000000000001 121.05000000000001