condition mean min max ZT0-3 0.0 0.0 0.0 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0388305 0.0388305 0.0388305 ZT12-15 0 0 0 ZT16-19 0.03869945 0.03869945 0.03869945 ZT20-23 0.038655 0.038655 0.038655