condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.020509075 0.0 0.04101815 ZT16-19 0.079484 0.079484 0.079484 ZT20-23 0.0 0.0 0.0