condition mean min max ZT0-3 0.283438 0.23777550000000003 0.3291005 ZT4-7 0.19054749999999998 0.19054749999999998 0.19054749999999998 ZT8-11 16.0469 16.0469 16.0469 ZT12-15 0 0 0 ZT16-19 16.8304 16.8304 16.8304 ZT20-23 2.6315850000000003 2.6315850000000003 2.6315850000000003