condition mean min max ZT0-3 594.9 594.9 594.9 ZT4-7 650.1 650.1 650.1 ZT8-11 541.25 541.25 541.25 ZT12-15 472.55 472.55 472.55 ZT16-19 527.85 527.85 527.85 ZT20-23 612.65 612.65 612.65