condition mean min max ZT0-3 308.75 308.75 308.75 ZT4-7 406.4 406.4 406.4 ZT8-11 383.1 383.1 383.1 ZT12-15 404.7 404.7 404.7 ZT16-19 393.1 393.1 393.1 ZT20-23 360.05 360.05 360.05