condition mean min max ZT0-3 0.5697481275 0.0 1.139496255 ZT4-7 0.0 0.0 0.0 ZT8-11 0.12394859066666668 0.0 0.24789718133333336 ZT12-15 0.04169227350000001 0.0 0.08338454700000002 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0