condition mean min max ZT0-3 60.641985877500005 54.47217896 66.811792795 ZT4-7 22.972386715 14.79049836 31.154275069999997 ZT8-11 45.68739631 21.86058585 69.51420676999999 ZT12-15 112.45025924999999 110.0460193 114.85449919999999 ZT16-19 111.69449146 102.52960317 120.85937974999999 ZT20-23 90.1524586 83.67315077 96.63176643