condition mean min max ZT0-3 0.01854614275 0.0 0.0370922855 ZT4-7 0.36772732225 0.0483996265 0.687055018 ZT8-11 4.49977779875 3.7123834890000005 5.2871721085 ZT12-15 9.31485548875 8.776474296 9.8532366815 ZT16-19 5.37177343575 4.593193824 6.1503530474999994 ZT20-23 7.725923239249999 6.804018778 8.647827700499999