condition mean min max ZT0-3 10.7971 10.7971 10.7971 ZT4-7 12.101499 12.101499 12.101499 ZT8-11 10.345943 10.345943 10.345943 ZT12-15 10.05588 10.05588 10.05588 ZT16-19 10.7257925 10.7257925 10.7257925 ZT20-23 11.600794 11.600794 11.600794