condition mean min max ZT0-3 106.25 106.25 106.25 ZT4-7 157.0 157.0 157.0 ZT8-11 128.15 128.15 128.15 ZT12-15 99.65 99.65 99.65 ZT16-19 84.7 84.7 84.7 ZT20-23 93.2 93.2 93.2