condition mean min max ZT0-3 0.062576225 0.04132695 0.0838255 ZT4-7 0.06325515000000001 0.06325515000000001 0.06325515000000001 ZT8-11 0.0 0.0 0.0 ZT12-15 0 0 0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0831055 0.0831055 0.0831055