condition mean min max ZT0-3 460.65 460.65 460.65 ZT4-7 485.4 485.4 485.4 ZT8-11 668.5 668.5 668.5 ZT12-15 733.3 733.3 733.3 ZT16-19 597.85 597.85 597.85 ZT20-23 478.25 478.25 478.25