condition mean min max ZT0-3 51.55 51.55 51.55 ZT4-7 49.7 49.7 49.7 ZT8-11 42.75 42.75 42.75 ZT12-15 47.65 47.65 47.65 ZT16-19 101.7 101.7 101.7 ZT20-23 61.800000000000004 61.800000000000004 61.800000000000004