condition mean min max ZT0-3 114.73958777499999 112.37751755 117.101658 ZT4-7 141.65303219999998 110.0888056 173.2172588 ZT8-11 203.707541625 187.59917565 219.8159076 ZT12-15 113.34189578 83.667910645 143.015880915 ZT16-19 108.54287794500001 98.44701847500002 118.63873741500001 ZT20-23 141.85577535 141.59315415 142.11839655