condition mean min max ZT0-3 107.7 107.7 107.7 ZT4-7 137.5 137.5 137.5 ZT8-11 93.65 93.65 93.65 ZT12-15 124.6 124.6 124.6 ZT16-19 80.75 80.75 80.75 ZT20-23 83.05 83.05 83.05