condition mean min max ZT0-3 47.671246762500004 40.912962475 54.42953105 ZT4-7 28.2771284425 28.079646765 28.47461012 ZT8-11 17.0035043625 15.960780934999999 18.04622779 ZT12-15 16.734823265000003 13.351991555000001 20.117654975 ZT16-19 51.0462740225 36.83465173 65.257896315 ZT20-23 135.3926689825 104.360488515 166.42484945