condition mean min max ZT0-3 3419.8500000000004 3419.8500000000004 3419.8500000000004 ZT4-7 4908.0 4908.0 4908.0 ZT8-11 4591.15 4591.15 4591.15 ZT12-15 4335.65 4335.65 4335.65 ZT16-19 3654.25 3654.25 3654.25 ZT20-23 3254.4 3254.4 3254.4