condition mean min max ZT0-3 90.1 90.1 90.1 ZT4-7 110.8 110.8 110.8 ZT8-11 66.75 66.75 66.75 ZT12-15 31.25 31.25 31.25 ZT16-19 23.5 23.5 23.5 ZT20-23 10.600000000000001 10.600000000000001 10.600000000000001