condition mean min max ZT0-3 0.652185894 0.575316159 0.7290556290000001 ZT4-7 0.11794584525 0.050752715 0.1851389755 ZT8-11 8.293752536 0.5509201225 16.0365849495 ZT12-15 22.780786964999997 22.21818978 23.34338415 ZT16-19 11.572543265 7.7353253315 15.4097611985 ZT20-23 2.1786990727499997 1.40898905 2.9484090954999997