condition mean min max ZT0-3 105.93655257500001 103.02076875 108.8523364 ZT4-7 85.04899458166668 81.08538147666667 89.01260768666667 ZT8-11 52.080601748333336 43.93672367333333 60.22447982333333 ZT12-15 38.7039961 37.84057271 39.56741949 ZT16-19 49.712076735 46.2399727 53.18418077 ZT20-23 79.67122457166667 65.52622785 93.81622129333334