condition mean min max ZT0-3 0.8178050375 0.409898229 1.225711846 ZT4-7 4.481201047 3.7842823085 5.1781197855 ZT8-11 4.496999414 4.32787578 4.666123048 ZT12-15 3.6139502452500003 3.2197709495 4.008129541000001 ZT16-19 1.1023607215 0.8873318099999999 1.317389633 ZT20-23 0.41447653900000003 0.3651134415 0.4638396365