condition mean min max ZT0-3 0.03514966666666667 0.0 0.0534165 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0 0.0 0.0 ZT16-19 0.05001 0.05001 0.05001 ZT20-23 0.0 0.0 0.0