condition mean min max ZT0-3 262.9 262.9 262.9 ZT4-7 318.0 318.0 318.0 ZT8-11 267.5 267.5 267.5 ZT12-15 262.15 262.15 262.15 ZT16-19 309.85 309.85 309.85 ZT20-23 277.15 277.15 277.15