condition mean min max ZT0-3 0.026335333333333336 0.0 0.05267066666666667 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 0.0197235 0.0 0.039447 ZT20-23 0 0 0