condition mean min max ZT0-3 144.319933 144.319933 144.319933 ZT4-7 104.5572865 104.5572865 104.5572865 ZT8-11 118.6143565 118.6143565 118.6143565 ZT12-15 129.821407 129.821407 129.821407 ZT16-19 230.512797 230.512797 230.512797 ZT20-23 205.7847895 205.7847895 205.7847895