condition mean min max ZT0-3 51.3395 40.127300000000005 65.02584999999999 ZT4-7 88.39240000000001 88.39240000000001 88.39240000000001 ZT8-11 301.5795 301.5795 301.5795 ZT12-15 161.387675 79.24785 243.5275 ZT16-19 51.19955 51.19955 51.19955 ZT20-23 45.871 45.871 45.871