1. A computer-implemented method for populating an electronic numerical model grid comprising: automatically receiving a time step number of time steps in data from a computer-readable medium; automatically receiving a background number of background zero-padded time steps to be prepended to the data; automatically receiving a first record copy number of copies of a first original data record of the data; automatically receiving a ramped record number of a number of time steps to include the ramped values; automatically receiving a ramping starting time step; automatically creating processed data by prepending the background number of zero-padded time steps to the data, copying the first record copy number to the prepended data, ramping the copied prepended data based on the received ramping starting time step and the ramped record number of time steps, and appending a preselected number of original data values to the ramped, copied, prepended data; and automatically populating the electronic numerical model grid with the processed data.