This is a temperature-at-depth model for the conterminous Untied States, at 0 kilometers. It involves multiple physical quantities, such as bottomhole temperature, depth and spatial coordinates, heat flow, thermal conductivity, elevation, sediment thickness, magnetic anomaly, gravity anomaly, and gamma-ray flux of radioactive elements.
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.