condition mean min max ZT0-3 1.1416495565 0.878794887 1.404504226 ZT4-7 3.8279234917499996 2.8278808164999996 4.827966167 ZT8-11 32.81773200875 10.4248206675 55.210643350000005 ZT12-15 156.1469520225 150.965525945 161.3283781 ZT16-19 99.39589616250001 76.83758383 121.95420849500002 ZT20-23 61.587793430000005 43.989377205000004 79.186209655