condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.054245632 0.022337021 0.086154243 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0