condition mean min max ZT0-3 2787.45 2787.45 2787.45 ZT4-7 2268.5 2268.5 2268.5 ZT8-11 2439.05 2439.05 2439.05 ZT12-15 3017.45 3017.45 3017.45 ZT16-19 2884.25 2884.25 2884.25 ZT20-23 3029.6 3029.6 3029.6