condition mean min max ZT0-3 195.94 195.94 195.94 ZT4-7 131.579 131.579 131.579 ZT8-11 174.83800000000002 174.83800000000002 174.83800000000002 ZT12-15 144.291 144.291 144.291 ZT16-19 262.7765 262.7765 262.7765 ZT20-23 212.1695 212.1695 212.1695