condition mean min max ZT0-3 295.8 295.8 295.8 ZT4-7 257.8 257.8 257.8 ZT8-11 258.55 258.55 258.55 ZT12-15 229.2 229.2 229.2 ZT16-19 240.9 240.9 240.9 ZT20-23 324.5 324.5 324.5