condition mean min max ZT0-3 0.027107983333333332 0.0 0.065398 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.017160075 0.0 0.03432015 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0