condition mean min max ZT0-3 68.93085 16.2913 163.55200000000002 ZT4-7 201.572 201.572 201.572 ZT8-11 49.8326 49.8326 49.8326 ZT12-15 26.882649999999998 18.262099999999997 35.5032 ZT16-19 11.1593 11.1593 11.1593 ZT20-23 10.024805 10.024805 10.024805