condition mean min max ZT0-3 657.25 657.25 657.25 ZT4-7 612.9 612.9 612.9 ZT8-11 440.95 440.95 440.95 ZT12-15 612.95 612.95 612.95 ZT16-19 718.65 718.65 718.65 ZT20-23 778.35 778.35 778.35