condition mean min max ZT0-3 138.8 138.8 138.8 ZT4-7 194.3 194.3 194.3 ZT8-11 157.3 157.3 157.3 ZT12-15 194.25 194.25 194.25 ZT16-19 137.8 137.8 137.8 ZT20-23 176.6 176.6 176.6