condition mean min max ZT0-3 14.07552123775 12.5493836255 15.60165885 ZT4-7 4.9998870347499995 4.9740169165 5.025757153 ZT8-11 5.560072611500001 4.905642439 6.2145027840000004 ZT12-15 5.54665052725 5.5095130144999995 5.58378804 ZT16-19 5.509263744749999 4.642982807499999 6.375544681999999 ZT20-23 9.7320474785 9.5367093935 9.9273855635