condition mean min max ZT0-3 0.39958475 0.350225 0.44894449999999997 ZT4-7 0.256135 0.256135 0.256135 ZT8-11 0.28826250000000003 0.28826250000000003 0.28826250000000003 ZT12-15 0 0 0 ZT16-19 0.3128045 0.3128045 0.3128045 ZT20-23 0.28378400000000004 0.28378400000000004 0.28378400000000004