condition mean min max ZT0-3 3255.3 3255.3 3255.3 ZT4-7 2798.5 2798.5 2798.5 ZT8-11 2728.35 2728.35 2728.35 ZT12-15 2832.75 2832.75 2832.75 ZT16-19 3160.05 3160.05 3160.05 ZT20-23 3332.45 3332.45 3332.45