condition mean min max ZT0-3 0.0103519585 0.0 0.020703917 ZT4-7 0.0 0.0 0.0 ZT8-11 0.014487662833333331 0.0 0.028975325666666663 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0