condition mean min max ZT0-3 3327.7 3327.7 3327.7 ZT4-7 2348.7 2348.7 2348.7 ZT8-11 2380.4 2380.4 2380.4 ZT12-15 2838.25 2838.25 2838.25 ZT16-19 2535.3 2535.3 2535.3 ZT20-23 2772.35 2772.35 2772.35