condition mean min max ZT0-3 37.2 37.2 37.2 ZT4-7 44.0 44.0 44.0 ZT8-11 45.849999999999994 45.849999999999994 45.849999999999994 ZT12-15 60.2 60.2 60.2 ZT16-19 52.1 52.1 52.1 ZT20-23 40.3 40.3 40.3