condition mean min max ZT0-3 4661.75 4661.75 4661.75 ZT4-7 4561.9 4561.9 4561.9 ZT8-11 4653.75 4653.75 4653.75 ZT12-15 3290.5 3290.5 3290.5 ZT16-19 2716.25 2716.25 2716.25 ZT20-23 3395.45 3395.45 3395.45