condition mean min max ZT0-3 949.3 949.3 949.3 ZT4-7 399.8 399.8 399.8 ZT8-11 591.45 591.45 591.45 ZT12-15 694.45 694.45 694.45 ZT16-19 999.75 999.75 999.75 ZT20-23 1046.1 1046.1 1046.1