condition mean min max ZT0-3 76.002922 76.002922 76.002922 ZT4-7 71.869885 71.869885 71.869885 ZT8-11 73.1477445 73.1477445 73.1477445 ZT12-15 74.2823055 74.2823055 74.2823055 ZT16-19 117.6560015 117.6560015 117.6560015 ZT20-23 96.2246005 96.2246005 96.2246005