condition mean min max ZT0-3 38.6644 38.6644 38.6644 ZT4-7 45.76885 45.76885 45.76885 ZT8-11 55.2993 55.2993 55.2993 ZT12-15 87.362 87.362 87.362 ZT16-19 39.5596 39.5596 39.5596 ZT20-23 37.87905 37.87905 37.87905