condition mean min max ZT0-3 0.033357333333333336 0.0 0.0506925 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 0.0246276 0.0246276 0.0246276 ZT20-23 0.0 0.0 0.0