condition mean min max ZT0-3 10.062964999999998 10.062964999999998 10.062964999999998 ZT4-7 7.549545 7.549545 7.549545 ZT8-11 7.639375 7.639375 7.639375 ZT12-15 7.66144 7.66144 7.66144 ZT16-19 10.250795 10.250795 10.250795 ZT20-23 9.526135 9.526135 9.526135