condition mean min max ZT0-3 0.015314375 0.0 0.03062875 ZT4-7 0.0 0.0 0.0 ZT8-11 0.06148065 0.06148065 0.06148065 ZT12-15 0 0 0 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0