condition mean min max ZT0-3 0.018794266666666667 0.018794266666666667 0.018794266666666667 ZT4-7 0.010943865 0.010943865 0.010943865 ZT8-11 0.01468145 0.01468145 0.01468145 ZT12-15 0.0050683 0.0050683 0.0050683 ZT16-19 0.018888000000000002 0.018888000000000002 0.018888000000000002 ZT20-23 0.0 0.0 0.0