condition mean min max ZT0-3 0.29305544999999994 0.073466375 0.5126445249999999 ZT4-7 6.2826161345 2.6238121735 9.9414200955 ZT8-11 57.526917645 39.01125742 76.04257787 ZT12-15 102.4349213925 95.10248423499999 109.76735855 ZT16-19 17.40564537025 11.833277775500001 22.978012965 ZT20-23 25.2988840225 21.41805404 29.179714005