condition mean min max ZT0-3 157.0 157.0 157.0 ZT4-7 108.8 108.8 108.8 ZT8-11 93.0 93.0 93.0 ZT12-15 127.2 127.2 127.2 ZT16-19 154.25 154.25 154.25 ZT20-23 150.45 150.45 150.45