condition mean min max ZT0-3 2426.7 2426.7 2426.7 ZT4-7 2311.6 2311.6 2311.6 ZT8-11 2349.1499999999996 2349.1499999999996 2349.1499999999996 ZT12-15 2129.75 2129.75 2129.75 ZT16-19 2211.45 2211.45 2211.45 ZT20-23 2399.45 2399.45 2399.45