condition mean min max ZT0-3 46.9 46.9 46.9 ZT4-7 44.7 44.7 44.7 ZT8-11 40.65 40.65 40.65 ZT12-15 25.05 25.05 25.05 ZT16-19 57.300000000000004 57.300000000000004 57.300000000000004 ZT20-23 17.25 17.25 17.25