condition mean min max ZT0-3 90.1 90.1 90.1 ZT4-7 46.0 46.0 46.0 ZT8-11 50.449999999999996 50.449999999999996 50.449999999999996 ZT12-15 66.45 66.45 66.45 ZT16-19 102.15 102.15 102.15 ZT20-23 75.3 75.3 75.3