condition mean min max ZT0-3 11.095175000000001 10.80255 11.3878 ZT4-7 8.308264999999999 8.308264999999999 8.308264999999999 ZT8-11 10.9043 10.9043 10.9043 ZT12-15 0 0 0 ZT16-19 14.57545 14.57545 14.57545 ZT20-23 12.76635 12.76635 12.76635