condition mean min max ZT0-3 36.9372729875 28.062587005 45.81195897 ZT4-7 22.246807139999998 18.502154949999998 25.991459329999998 ZT8-11 37.9236815225 33.289533829999996 42.557829215 ZT12-15 56.15782620750001 51.82334353 60.49230888500001 ZT16-19 63.383490115 61.50463819 65.26234204 ZT20-23 80.1548551725 73.848297755 86.46141259000001