condition mean min max ZT0-3 4453.67 4453.67 4453.67 ZT4-7 2764.193333333333 2764.193333333333 2764.193333333333 ZT8-11 2510.6577780000002 2510.6577780000002 2510.6577780000002 ZT12-15 2358.168889 2358.168889 2358.168889 ZT16-19 3221.0777780000003 3221.0777780000003 3221.0777780000003 ZT20-23 5356.318889 5356.318889 5356.318889