condition mean min max ZT0-3 3751.55 3751.55 3751.55 ZT4-7 2460.3 2460.3 2460.3 ZT8-11 2478.3 2478.3 2478.3 ZT12-15 2494.15 2494.15 2494.15 ZT16-19 2850.5 2850.5 2850.5 ZT20-23 3488.1 3488.1 3488.1