condition mean min max ZT0-3 2425.6 2425.6 2425.6 ZT4-7 2818.3 2818.3 2818.3 ZT8-11 2772.3 2772.3 2772.3 ZT12-15 2854.1 2854.1 2854.1 ZT16-19 2949.0 2949.0 2949.0 ZT20-23 2702.6 2702.6 2702.6