condition mean min max ZT0-3 3152.75 3152.75 3152.75 ZT4-7 2294.8 2294.8 2294.8 ZT8-11 2407.15 2407.15 2407.15 ZT12-15 2412.05 2412.05 2412.05 ZT16-19 2837.75 2837.75 2837.75 ZT20-23 3205.3 3205.3 3205.3