condition mean min max ZT0-3 431.35 431.35 431.35 ZT4-7 2474.5 2474.5 2474.5 ZT8-11 2900.85 2900.85 2900.85 ZT12-15 2231.1000000000004 2231.1000000000004 2231.1000000000004 ZT16-19 1013.2 1013.2 1013.2 ZT20-23 578.3 578.3 578.3