condition mean min max ZT0-3 143.2 143.2 143.2 ZT4-7 196.2 196.2 196.2 ZT8-11 239.5 239.5 239.5 ZT12-15 197.2 197.2 197.2 ZT16-19 209.45 209.45 209.45 ZT20-23 167.55 167.55 167.55