condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.22169899999999998 0.22169899999999998 0.22169899999999998 ZT8-11 0.498301 0.498301 0.498301 ZT12-15 0.3603945 0.3603945 0.3603945 ZT16-19 0.35949733333333334 0.35949733333333334 0.35949733333333334 ZT20-23 0.23296799999999998 0.23296799999999998 0.23296799999999998