condition mean min max ZT0-3 21.8626670575 18.295814515 25.429519600000003 ZT4-7 26.0644456075 22.594366190000002 29.534525025 ZT8-11 54.640713667499995 41.170741645 68.11068569 ZT12-15 46.677297267499995 37.15480841 56.199786124999996 ZT16-19 30.940556492499997 28.795425254999998 33.08568773 ZT20-23 24.665124759999998 24.005290334999998 25.324959185