condition mean min max ZT0-3 190.1 190.1 190.1 ZT4-7 59.3 59.3 59.3 ZT8-11 63.25 63.25 63.25 ZT12-15 33.6 33.6 33.6 ZT16-19 13.35 13.35 13.35 ZT20-23 115.85 115.85 115.85