condition mean min max ZT0-3 35.12853333333333 30.59035 38.8238 ZT4-7 23.3408 23.3408 23.3408 ZT8-11 20.16135 20.16135 20.16135 ZT12-15 40.34595 38.4731 42.2188 ZT16-19 37.06215 37.06215 37.06215 ZT20-23 41.690200000000004 41.690200000000004 41.690200000000004