condition mean min max ZT0-3 0.26828078475 0.26094614 0.2756154295 ZT4-7 0.14142461774999998 0.11403469399999999 0.16881454149999997 ZT8-11 0.05522586774999999 0.01348458 0.09696715549999999 ZT12-15 4.126616844 3.5682187225 4.6850149655 ZT16-19 7.4449118445 6.0537769489999995 8.83604674 ZT20-23 5.84847440475 5.040342462 6.6566063474999995