condition mean min max ZT0-3 4.5193375 3.991265 5.04741 ZT4-7 2.02523 2.02523 2.02523 ZT8-11 2.1209 2.1209 2.1209 ZT12-15 0 0 0 ZT16-19 4.018675 4.018675 4.018675 ZT20-23 4.22852 4.22852 4.22852