condition mean min max ZT0-3 2790.75 2790.75 2790.75 ZT4-7 2578.0 2578.0 2578.0 ZT8-11 2530.8 2530.8 2530.8 ZT12-15 2718.55 2718.55 2718.55 ZT16-19 2801.6000000000004 2801.6000000000004 2801.6000000000004 ZT20-23 2741.5 2741.5 2741.5