condition mean min max ZT0-3 401.0 401.0 401.0 ZT4-7 338.0 338.0 338.0 ZT8-11 312.9 312.9 312.9 ZT12-15 416.85 416.85 416.85 ZT16-19 455.2 455.2 455.2 ZT20-23 376.15 376.15 376.15