condition mean min max ZT0-3 14.2456 13.337900000000001 15.1533 ZT4-7 8.822305 8.822305 8.822305 ZT8-11 8.73785 8.73785 8.73785 ZT12-15 0 0 0 ZT16-19 10.925325 10.925325 10.925325 ZT20-23 12.83885 12.83885 12.83885