Difference between the Goldstone and GBT radar albedos as a function of the difference in their β angles, showing values for OC (top) and SC (bottom). The error bars were calculated using the standard error propagation formula and the total uncertainties of the OC and SC albedo. The covariance between the Goldstone and GBT albedos is calculated in the same way as described in Section 4. The dashed horizontal lines are at 0.10 (OC) and 0.14 (SC), the weighted means of the differences.