condition mean min max ZT0-3 0.017165 0.0 0.051495 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.02582075 0.0 0.0516415 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0