condition mean min max ZT0-3 4.25 4.25 4.25 ZT4-7 8.5 8.5 8.5 ZT8-11 4.2 4.2 4.2 ZT12-15 5.15 5.15 5.15 ZT16-19 32.05 32.05 32.05 ZT20-23 7.800000000000001 7.800000000000001 7.800000000000001