condition mean min max ZT0-3 173.49699999999999 173.49699999999999 173.49699999999999 ZT4-7 130.2525 130.2525 130.2525 ZT8-11 110.42699999999999 110.42699999999999 110.42699999999999 ZT12-15 130.513 130.513 130.513 ZT16-19 171.664 171.664 171.664 ZT20-23 188.20266666666666 188.20266666666666 188.20266666666666