condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0910785 0.063903 0.11825400000000001 ZT16-19 0.12182316666666666 0.0 0.24364633333333333 ZT20-23 0 0 0