condition mean min max ZT0-3 1832.6 1832.6 1832.6 ZT4-7 532.7 532.7 532.7 ZT8-11 618.25 618.25 618.25 ZT12-15 643.45 643.45 643.45 ZT16-19 849.9 849.9 849.9 ZT20-23 1708.0 1708.0 1708.0