condition mean min max ZT0-3 11.629349999999999 10.8637 12.395 ZT4-7 65.31684999999999 65.31684999999999 65.31684999999999 ZT8-11 52.52885 52.52885 52.52885 ZT12-15 0 0 0 ZT16-19 0.533052 0.533052 0.533052 ZT20-23 0.461788 0.461788 0.461788