condition mean min max ZT0-3 43.524375000000006 40.978 46.070750000000004 ZT4-7 24.035899999999998 24.035899999999998 24.035899999999998 ZT8-11 12.3087 12.3087 12.3087 ZT12-15 0 0 0 ZT16-19 27.68995 27.68995 27.68995 ZT20-23 46.46655 46.46655 46.46655