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 0.0647574355 0.0352967735 0.0942180975 ZT16-19 0.04870732625 0.0 0.0974146525 ZT20-23 0.0 0.0 0.0