condition mean min max ZT0-3 0.5079516666666667 0.0 1.0159033333333334 ZT4-7 0.0 0.0 0.0 ZT8-11 0.72626 0.72626 0.72626 ZT12-15 0.29723125 0.0 0.5944625 ZT16-19 0.0 0.0 0.0 ZT20-23 0 0 0