condition mean min max ZT0-3 45.9969443775 32.51277867 59.481110085 ZT4-7 64.88814690250001 62.583507275 67.19278653 ZT8-11 99.01716016 79.92501037 118.10930995000001 ZT12-15 111.6216276775 94.15807015499999 129.0851852 ZT16-19 86.99355364 79.983773345 94.003333935 ZT20-23 69.81655539249999 69.756291635 69.87681915