condition mean min max ZT0-3 340.25 340.25 340.25 ZT4-7 293.3 293.3 293.3 ZT8-11 365.85 365.85 365.85 ZT12-15 269.5 269.5 269.5 ZT16-19 279.25 279.25 279.25 ZT20-23 405.75 405.75 405.75