condition mean min max ZT0-3 85.587745 85.587745 85.587745 ZT4-7 165.30516949999998 165.30516949999998 165.30516949999998 ZT8-11 172.048973 172.048973 172.048973 ZT12-15 176.32790549999999 176.32790549999999 176.32790549999999 ZT16-19 109.5943855 109.5943855 109.5943855 ZT20-23 91.3330875 91.3330875 91.3330875