condition mean min max ZT0-3 1922.1999999999998 1758.8899999999999 2133.95 ZT4-7 1945.42 1945.42 1945.42 ZT8-11 2238.965 2238.965 2238.965 ZT12-15 2129.3925 2125.1800000000003 2133.605 ZT16-19 2224.45 2224.45 2224.45 ZT20-23 1655.94 1655.94 1655.94