condition mean min max ZT0-3 0.73139266825 0.5922853215 0.870500015 ZT4-7 0.44723644149999997 0.24578019199999998 0.6486926909999999 ZT8-11 3.8138652302500002 1.215399916 6.4123305445000005 ZT12-15 33.241684565 26.059329975 40.424039155 ZT16-19 19.4235627975 17.772785550000002 21.074340045 ZT20-23 34.0846241525 26.026612635 42.142635670000004