condition mean min max ZT0-3 0.19066275 0.1503155 0.23101 ZT4-7 0.424806 0.424806 0.424806 ZT8-11 0.9657355 0.9657355 0.9657355 ZT12-15 0 0 0 ZT16-19 1.022148 1.022148 1.022148 ZT20-23 0.34224750000000004 0.34224750000000004 0.34224750000000004