condition mean min max ZT0-3 4733.85 4733.85 4733.85 ZT4-7 3519.7 3519.7 3519.7 ZT8-11 3480.6000000000004 3480.6000000000004 3480.6000000000004 ZT12-15 3833.8 3833.8 3833.8 ZT16-19 3797.35 3797.35 3797.35 ZT20-23 4016.7 4016.7 4016.7