condition mean min max ZT0-3 57.784072 57.784072 57.784072 ZT4-7 40.6890105 40.6890105 40.6890105 ZT8-11 34.7776135 34.7776135 34.7776135 ZT12-15 52.533912 52.533912 52.533912 ZT16-19 37.2374205 37.2374205 37.2374205 ZT20-23 50.536654999999996 50.536654999999996 50.536654999999996