condition mean min max ZT0-3 0.0320762 0.0320762 0.0320762 ZT4-7 0.0 0.0 0.0 ZT8-11 0.033559 0.033559 0.033559 ZT12-15 0.0220567 0.0220567 0.0220567 ZT16-19 0.00262626 0.00262626 0.00262626 ZT20-23 0.0 0.0 0.0