condition mean min max ZT0-3 140.8021 140.8021 140.8021 ZT4-7 134.45976149999998 134.45976149999998 134.45976149999998 ZT8-11 187.757546 187.757546 187.757546 ZT12-15 360.4974275 360.4974275 360.4974275 ZT16-19 216.302921 216.302921 216.302921 ZT20-23 529.4039845 529.4039845 529.4039845