condition mean min max ZT0-3 259.45 259.45 259.45 ZT4-7 239.9 239.9 239.9 ZT8-11 279.3 279.3 279.3 ZT12-15 404.9 404.9 404.9 ZT16-19 324.2 324.2 324.2 ZT20-23 253.3 253.3 253.3