condition mean min max ZT0-3 147.8 147.8 147.8 ZT4-7 154.1 154.1 154.1 ZT8-11 166.3 166.3 166.3 ZT12-15 201.5 201.5 201.5 ZT16-19 199.8 199.8 199.8 ZT20-23 130.9 130.9 130.9