condition mean min max ZT0-3 0.7351583333333332 0.0 2.205475 ZT4-7 0.0 0.0 0.0 ZT8-11 2.10773 2.10773 2.10773 ZT12-15 0.0 0.0 0.0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0