condition mean min max ZT0-3 2534.15 2534.15 2534.15 ZT4-7 2109.2 2109.2 2109.2 ZT8-11 2024.85 2024.85 2024.85 ZT12-15 2299.55 2299.55 2299.55 ZT16-19 2584.3999999999996 2584.3999999999996 2584.3999999999996 ZT20-23 2595.25 2595.25 2595.25