condition mean min max ZT0-3 3739.35 3739.35 3739.35 ZT4-7 4578.9 4578.9 4578.9 ZT8-11 3984.4 3984.4 3984.4 ZT12-15 3229.05 3229.05 3229.05 ZT16-19 3415.3 3415.3 3415.3 ZT20-23 3567.5 3567.5 3567.5