condition mean min max ZT0-3 0.37482266125 0.078155718 0.6714896045000001 ZT4-7 3.4170991875 2.166161835 4.668036539999999 ZT8-11 12.13325921425 9.8983582385 14.368160190000001 ZT12-15 21.790190539999998 20.581457524999998 22.998923555 ZT16-19 25.3270872375 21.145449335 29.50872514 ZT20-23 39.2043267425 34.602829635 43.805823849999996