condition mean min max ZT0-3 12.710416666666667 10.978549999999998 14.58685 ZT4-7 9.387815 9.387815 9.387815 ZT8-11 8.600355 8.600355 8.600355 ZT12-15 11.785499999999999 11.06845 12.50255 ZT16-19 10.404045 10.404045 10.404045 ZT20-23 12.863800000000001 12.863800000000001 12.863800000000001