condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0257973 0.0257973 0.0257973 ZT8-11 0.10807023333333333 0.10807023333333333 0.10807023333333333 ZT12-15 0.0 0.0 0.0 ZT16-19 0.013182399999999999 0.013182399999999999 0.013182399999999999 ZT20-23 0.0 0.0 0.0