condition mean min max ZT0-3 169.2 169.2 169.2 ZT4-7 109.2 109.2 109.2 ZT8-11 145.9 145.9 145.9 ZT12-15 183.7 183.7 183.7 ZT16-19 189.45 189.45 189.45 ZT20-23 132.55 132.55 132.55