condition mean min max ZT0-3 9.00076 9.00076 9.00076 ZT4-7 13.843 13.843 13.843 ZT8-11 3.82787 3.82787 3.82787 ZT12-15 1.7187299999999999 1.7187299999999999 1.7187299999999999 ZT16-19 1.4635235 1.4635235 1.4635235 ZT20-23 5.109205 5.109205 5.109205