condition mean min max ZT0-3 1.65 1.65 1.65 ZT4-7 17.7 17.7 17.7 ZT8-11 9.950000000000001 9.950000000000001 9.950000000000001 ZT12-15 0.9500000000000001 0.9500000000000001 0.9500000000000001 ZT16-19 26.4 26.4 26.4 ZT20-23 14.600000000000001 14.600000000000001 14.600000000000001