condition mean min max ZT0-3 148.9 148.9 148.9 ZT4-7 168.1 168.1 168.1 ZT8-11 97.65 97.65 97.65 ZT12-15 49.25 49.25 49.25 ZT16-19 301.7 301.7 301.7 ZT20-23 258.1 258.1 258.1