condition mean min max ZT0-3 283.373823 283.373823 283.373823 ZT4-7 124.897305 124.897305 124.897305 ZT8-11 152.76793700000002 152.76793700000002 152.76793700000002 ZT12-15 151.12052 151.12052 151.12052 ZT16-19 179.5157895 179.5157895 179.5157895 ZT20-23 202.40299349999998 202.40299349999998 202.40299349999998