condition mean min max ZT0-3 239.55 239.55 239.55 ZT4-7 218.1 218.1 218.1 ZT8-11 147.2 147.2 147.2 ZT12-15 182.7 182.7 182.7 ZT16-19 181.45 181.45 181.45 ZT20-23 196.45 196.45 196.45