condition mean min max ZT0-3 0.36412382600000004 0.351772697 0.37647495500000006 ZT4-7 0.57216920025 0.4002572655 0.744081135 ZT8-11 9.91179031175 4.058340379500001 15.765240244 ZT12-15 30.416540302500003 24.847788655000002 35.985291950000004 ZT16-19 13.093538327000001 9.599754529 16.587322125 ZT20-23 3.934009669 2.631973878 5.23604546