condition mean min max ZT0-3 0.127938565 0.050785665 0.27932 ZT4-7 0.34948650000000003 0.34948650000000003 0.34948650000000003 ZT8-11 0.26713349999999997 0.26713349999999997 0.26713349999999997 ZT12-15 0.099706125 0.02423425 0.175178 ZT16-19 0.1148339 0.1148339 0.1148339 ZT20-23 0.0794295 0.0794295 0.0794295