condition mean min max ZT0-3 76.002922 76.002922 76.002922 ZT4-7 80.949989 80.949989 80.949989 ZT8-11 73.9506095 73.9506095 73.9506095 ZT12-15 66.8562175 66.8562175 66.8562175 ZT16-19 90.6088395 90.6088395 90.6088395 ZT20-23 83.64721700000001 83.64721700000001 83.64721700000001