condition mean min max ZT0-3 125.04566666666666 111.16550000000001 141.3475 ZT4-7 89.72370000000001 89.72370000000001 89.72370000000001 ZT8-11 67.95785 67.95785 67.95785 ZT12-15 65.663025 64.03035 67.29570000000001 ZT16-19 64.56155 64.56155 64.56155 ZT20-23 102.4293 102.4293 102.4293