condition mean min max ZT0-3 37.3 37.3 37.3 ZT4-7 37.1 37.1 37.1 ZT8-11 36.849999999999994 36.849999999999994 36.849999999999994 ZT12-15 43.25 43.25 43.25 ZT16-19 51.75 51.75 51.75 ZT20-23 34.15 34.15 34.15