condition mean min max ZT0-3 0.8697457480000002 0.153547086 1.5859444100000002 ZT4-7 12.471723084499999 9.558932674 15.384513495 ZT8-11 33.5344645225 28.830278335000003 38.23865071 ZT12-15 47.9490736125 44.497654485 51.400492740000004 ZT16-19 18.70511463525 14.4526597355 22.957569534999998 ZT20-23 7.350076949 5.5340939725 9.1660599255