condition mean min max ZT0-3 2360.55 2360.55 2360.55 ZT4-7 2917.1 2917.1 2917.1 ZT8-11 2791.8999999999996 2791.8999999999996 2791.8999999999996 ZT12-15 3220.1 3220.1 3220.1 ZT16-19 2755.4 2755.4 2755.4 ZT20-23 2518.5 2518.5 2518.5