condition mean min max ZT0-3 0.02973032075 0.0 0.0594606415 ZT4-7 0.090226256 0.06518240900000001 0.115270103 ZT8-11 0.204607931 0.1574825875 0.2517332745 ZT12-15 0.065855039 0.056346117 0.07536396100000001 ZT16-19 0.028141365 0.027153839 0.029128891 ZT20-23 0.24695121375 0.058243715 0.43565871250000004