condition mean min max ZT0-3 42.55 42.55 42.55 ZT4-7 52.2 52.2 52.2 ZT8-11 46.1 46.1 46.1 ZT12-15 48.65 48.65 48.65 ZT16-19 70.75 70.75 70.75 ZT20-23 65.65 65.65 65.65