condition mean min max ZT0-3 40.25 40.25 40.25 ZT4-7 57.9 57.9 57.9 ZT8-11 73.85 73.85 73.85 ZT12-15 45.75 45.75 45.75 ZT16-19 57.0 57.0 57.0 ZT20-23 61.449999999999996 61.449999999999996 61.449999999999996