condition mean min max ZT0-3 929.05 929.05 929.05 ZT4-7 1171.5 1171.5 1171.5 ZT8-11 857.05 857.05 857.05 ZT12-15 958.1 958.1 958.1 ZT16-19 935.1 935.1 935.1 ZT20-23 891.35 891.35 891.35