condition mean min max ZT0-3 459.62014 459.62014 459.62014 ZT4-7 490.56491800000003 490.56491800000003 490.56491800000003 ZT8-11 429.804626 429.804626 429.804626 ZT12-15 444.088312 444.088312 444.088312 ZT16-19 322.5012875 322.5012875 322.5012875 ZT20-23 426.5869315 426.5869315 426.5869315