condition mean min max ZT0-3 811.01142 811.01142 811.01142 ZT4-7 862.6801525000001 862.6801525000001 862.6801525000001 ZT8-11 843.4290075 843.4290075 843.4290075 ZT12-15 791.5224065 791.5224065 791.5224065 ZT16-19 741.6977865 741.6977865 741.6977865 ZT20-23 798.6739574999999 798.6739574999999 798.6739574999999