condition mean min max ZT0-3 324.15 324.15 324.15 ZT4-7 126.3 126.3 126.3 ZT8-11 209.95 209.95 209.95 ZT12-15 217.1 217.1 217.1 ZT16-19 194.25 194.25 194.25 ZT20-23 281.15 281.15 281.15