condition mean min max ZT0-3 2142.45 2142.45 2142.45 ZT4-7 2722.0 2722.0 2722.0 ZT8-11 2645.95 2645.95 2645.95 ZT12-15 2617.1499999999996 2617.1499999999996 2617.1499999999996 ZT16-19 2543.55 2543.55 2543.55 ZT20-23 2365.9 2365.9 2365.9