condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.04171772133333334 0.0 0.08343544266666668 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0