condition mean min max ZT0-3 101.86937690500001 58.87147281000001 144.86728100000002 ZT4-7 15.1702134425 11.649107215 18.69131967 ZT8-11 39.8079281425 29.827251345 49.78860494 ZT12-15 34.906374389999996 23.24017447 46.57257431 ZT16-19 10.58608258125 9.247044473999999 11.925120688500002 ZT20-23 6.418471328 5.991004344 6.8459383119999995