condition mean min max ZT0-3 0.017018166666666668 0.0 0.0510545 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.024974125 0.0 0.04994825 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0