condition mean min max ZT0-3 3475.15 3475.15 3475.15 ZT4-7 3269.5 3269.5 3269.5 ZT8-11 3447.0 3447.0 3447.0 ZT12-15 3540.95 3540.95 3540.95 ZT16-19 3460.25 3460.25 3460.25 ZT20-23 3636.5 3636.5 3636.5