condition mean min max ZT0-3 131.665 130.3025 133.10500000000002 ZT4-7 147.08249999999998 147.08249999999998 147.08249999999998 ZT8-11 161.339 161.339 161.339 ZT12-15 179.88125 159.69299999999998 200.0695 ZT16-19 186.7785 186.7785 186.7785 ZT20-23 162.9615 162.9615 162.9615