condition mean min max ZT0-3 43.722066 43.722066 43.722066 ZT4-7 30.48557 30.48557 30.48557 ZT8-11 42.707293 42.707293 42.707293 ZT12-15 35.3818055 35.3818055 35.3818055 ZT16-19 40.944973000000005 40.944973000000005 40.944973000000005 ZT20-23 40.133873 40.133873 40.133873