condition mean min max ZT0-3 602.3 602.3 602.3 ZT4-7 3472.9 3472.9 3472.9 ZT8-11 2932.65 2932.65 2932.65 ZT12-15 1969.5 1969.5 1969.5 ZT16-19 853.9 853.9 853.9 ZT20-23 411.95 411.95 411.95