condition mean min max ZT0-3 9.120114999999998 9.010214999999999 9.230015 ZT4-7 12.13055 12.13055 12.13055 ZT8-11 13.88105 13.88105 13.88105 ZT12-15 0 0 0 ZT16-19 12.2163 12.2163 12.2163 ZT20-23 11.99715 11.99715 11.99715