condition mean min max ZT0-3 28.6204 28.6204 28.6204 ZT4-7 57.3822 57.3822 57.3822 ZT8-11 44.6874 44.6874 44.6874 ZT12-15 30.10475 30.10475 30.10475 ZT16-19 25.8037 25.8037 25.8037 ZT20-23 27.8765 27.8765 27.8765