condition mean min max ZT0-3 46.0 46.0 46.0 ZT4-7 45.2 45.2 45.2 ZT8-11 46.45 46.45 46.45 ZT12-15 45.800000000000004 45.800000000000004 45.800000000000004 ZT16-19 35.2 35.2 35.2 ZT20-23 47.75 47.75 47.75