condition mean min max ZT0-3 857.4 857.4 857.4 ZT4-7 662.3 662.3 662.3 ZT8-11 595.95 595.95 595.95 ZT12-15 460.0 460.0 460.0 ZT16-19 581.55 581.55 581.55 ZT20-23 660.6500000000001 660.6500000000001 660.6500000000001