condition mean min max ZT0-3 0.0049550535 0.0 0.009910107 ZT4-7 0.0321859585 0.0 0.064371917 ZT8-11 0.01999350625 0.0 0.0399870125 ZT12-15 0.069998801 0.06370287399999999 0.07629472799999999 ZT16-19 0.05522179775 0.0256226925 0.084820903 ZT20-23 0.090383904 0.021275968 0.15949184