condition mean min max ZT0-3 0.07656094999999999 0.07656094999999999 0.07656094999999999 ZT4-7 0.03316785 0.03316785 0.03316785 ZT8-11 0.16297799999999998 0.16297799999999998 0.16297799999999998 ZT12-15 0.0877475 0.0877475 0.0877475 ZT16-19 0.2325345 0.2325345 0.2325345 ZT20-23 0.6054200000000001 0.6054200000000001 0.6054200000000001