condition mean min max ZT0-3 0.015705525 0.0 0.03141105 ZT4-7 0.0630439 0.0630439 0.0630439 ZT8-11 0.062153 0.062153 0.062153 ZT12-15 0 0 0 ZT16-19 0.03107945 0.03107945 0.03107945 ZT20-23 0.0311967 0.0311967 0.0311967