condition mean min max ZT0-3 3.37824079025 0.8551697914999999 5.901311789 ZT4-7 0.190738773 0.1810647535 0.2004127925 ZT8-11 0.06326351875 0.0378931915 0.08863384599999999 ZT12-15 0.19144862250000003 0.12371643850000001 0.2591808065 ZT16-19 0.294288125 0.26607809250000003 0.3224981575 ZT20-23 0.5086102244999999 0.48043287749999997 0.5367875715