condition mean min max ZT0-3 0.006155175 0.0 0.01231035 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0064361125 0.0 0.012872225 ZT16-19 0.0 0.0 0.0 ZT20-23 0 0 0