condition mean min max ZT0-3 0.046033825 0.0460029 0.04606475 ZT4-7 0.0 0.0 0.0 ZT8-11 0.04557405 0.04557405 0.04557405 ZT12-15 0 0 0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0