condition mean min max ZT0-3 89.45 89.45 89.45 ZT4-7 50.6 50.6 50.6 ZT8-11 54.300000000000004 54.300000000000004 54.300000000000004 ZT12-15 119.55 119.55 119.55 ZT16-19 92.2 92.2 92.2 ZT20-23 97.65 97.65 97.65