condition mean min max ZT0-3 935.65 935.65 935.65 ZT4-7 829.9 829.9 829.9 ZT8-11 890.85 890.85 890.85 ZT12-15 851.9 851.9 851.9 ZT16-19 956.45 956.45 956.45 ZT20-23 1057.75 1057.75 1057.75