condition mean min max ZT0-3 0.024989575 0.0 0.04997915 ZT4-7 0.14783 0.14783 0.14783 ZT8-11 0.1992155 0.1992155 0.1992155 ZT12-15 0 0 0 ZT16-19 0.343989 0.343989 0.343989 ZT20-23 0.0 0.0 0.0