condition mean min max ZT0-3 375.75 375.75 375.75 ZT4-7 292.1 292.1 292.1 ZT8-11 404.6 404.6 404.6 ZT12-15 432.20000000000005 432.20000000000005 432.20000000000005 ZT16-19 564.2 564.2 564.2 ZT20-23 548.65 548.65 548.65