condition mean min max ZT0-3 12171.84788 12171.84788 12171.84788 ZT4-7 13082.952105 13082.952105 13082.952105 ZT8-11 11684.762345 11684.762345 11684.762345 ZT12-15 11912.3511 11912.3511 11912.3511 ZT16-19 10684.155134 10684.155134 10684.155134 ZT20-23 9121.580256500001 9121.580256500001 9121.580256500001