condition mean min max ZT0-3 0.53012997425 0.28319136300000003 0.7770685854999999 ZT4-7 1.78319659075 1.1867555749999998 2.3796376065000002 ZT8-11 3.3982402917499996 2.8476060015 3.9488745819999997 ZT12-15 3.4273403885 3.285983161 3.5686976159999997 ZT16-19 2.3424115920000004 2.0968759005 2.5879472835 ZT20-23 4.5364382955 3.799542809 5.273333782