In most cases, the output measured is the volume of threshed and winnowed, orrough, paddy. Converting the output to mass involves other difficulties. Rice that is properly prepared for storage has been dried for several days. When in the process of the measuring of mass of a particular volume has been done is important for evaluating the results. In consequence, the conversion of volume to mass is fraught with uncertainties that cannot be controlled or obviated. All volumes of rice have also been converted to mass, but the results should be used with caution.