condition mean min max ZT0-3 5.800000000000001 5.800000000000001 5.800000000000001 ZT4-7 10.0 10.0 10.0 ZT8-11 25.15 25.15 25.15 ZT12-15 5.0 5.0 5.0 ZT16-19 32.4 32.4 32.4 ZT20-23 5.65 5.65 5.65