condition mean min max ZT0-3 132.80816666666666 64.22149999999999 173.3785 ZT4-7 54.7673 54.7673 54.7673 ZT8-11 57.8438 57.8438 57.8438 ZT12-15 89.1615 82.01595 96.30705 ZT16-19 137.11 137.11 137.11 ZT20-23 212.802 212.802 212.802