condition mean min max ZT0-3 0.10929866666666667 0.0 0.169151 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 1.0853025 0.0 2.170605 ZT16-19 0.152304 0.152304 0.152304 ZT20-23 0.0 0.0 0.0