Derived regolith properties for highlands at the lunar equator when comparing the simulations with Diviner regolith temperatures (top row) and MRM brightness temperatures (second row) and both combined (third and fourth row). The heat maps illustrate the factor, Ω, (for the definition see Eq. (15)) by which the simulations deviate from the theoretically best possible solution (the theoretical best fit would result in Ω = 1). There are three free parameters in the thermophysical model, the grain radius, r, the transition width, ∆, and the deep layer density, ρ_d. The heat maps show this factor, Ω, for the combinations of two of each of the three free parameters, with the third parameter being variable. For illustration purposes, all Ω > 5 are colored black.