condition mean min max ZT0-3 37.4 37.4 37.4 ZT4-7 34.1 34.1 34.1 ZT8-11 38.2 38.2 38.2 ZT12-15 11.35 11.35 11.35 ZT16-19 108.65 108.65 108.65 ZT20-23 53.8 53.8 53.8