condition mean min max ZT0-3 5.9455174920000005 3.816528051 8.074506933 ZT4-7 17.321631779999997 17.005317735 17.637945825 ZT8-11 13.633428882499999 12.875749865 14.3911079 ZT12-15 109.3792557825 100.138931715 118.61957985000001 ZT16-19 113.604661995 101.40464329 125.8046807 ZT20-23 80.3464347875 73.17159150500001 87.52127807