condition mean min max ZT0-3 24.343325 24.28335 24.4033 ZT4-7 25.411450000000002 25.411450000000002 25.411450000000002 ZT8-11 16.11935 16.11935 16.11935 ZT12-15 0 0 0 ZT16-19 20.8523 20.8523 20.8523 ZT20-23 30.868299999999998 30.868299999999998 30.868299999999998