condition mean min max ZT0-3 118.7525 112.1585 125.34649999999999 ZT4-7 111.926 111.926 111.926 ZT8-11 40.67035 40.67035 40.67035 ZT12-15 0 0 0 ZT16-19 31.700699999999998 31.700699999999998 31.700699999999998 ZT20-23 76.2656 76.2656 76.2656