condition mean min max ZT0-3 11.753014605499999 9.597445541 13.908583669999999 ZT4-7 38.7602277575 23.69145566 53.828999855 ZT8-11 171.4601235875 118.937697225 223.98254994999996 ZT12-15 249.6419001 228.54081094999998 270.74298925 ZT16-19 186.7446868 186.6461147 186.8432589 ZT20-23 226.17504835 205.75517075 246.59492595