condition mean min max ZT0-3 190.9 190.9 190.9 ZT4-7 49.9 49.9 49.9 ZT8-11 63.800000000000004 63.800000000000004 63.800000000000004 ZT12-15 32.8 32.8 32.8 ZT16-19 151.65 151.65 151.65 ZT20-23 229.65 229.65 229.65