Cosmic ray density for each of the four clouds as a function of distance to η Car. The angular distance was transformed into a physical distance using a distance to η Car of 2.3 kpc. Distance errors depict the maximum extent of the cloud templates. The 1/r type profile as described in Eq. (5) was fit to the data points and is shown by the dashed line. For comparison, the CR densities as derived in Ge et al. (2022) for their regions A and B are shown in light grey.