condition mean min max ZT0-3 89.729601935 68.35400418 111.10519969 ZT4-7 136.46097960000003 131.26914960000002 141.6528096 ZT8-11 160.93331223333334 151.5551737 170.31145076666667 ZT12-15 139.08312635 138.92469219999998 139.2415605 ZT16-19 117.49511786 110.71113798666667 124.27909773333333 ZT20-23 89.09729094666666 82.37937252666666 95.81520936666666