condition mean min max ZT0-3 15.25 15.25 15.25 ZT4-7 2.0 2.0 2.0 ZT8-11 15.55 15.55 15.55 ZT12-15 21.1 21.1 21.1 ZT16-19 33.05 33.05 33.05 ZT20-23 14.649999999999999 14.649999999999999 14.649999999999999