BD_Coord                Precipitation Station Coordinates Dataset
BD_Obs                  Observed Data from Ground Stations
Cressman                Cressman Objective Analysis Method
IDW                     Inverse distance weighted interpolation (IDW)
Kriging_Ordinary        Ordinary Kriging interpolation
RFmerge                 Merging of satellite datasets with ground
                        observations using Random Forest
RFplus                  Machine learning algorithm for fusing ground
                        and satellite precipitation data.
create_data             Create a Unified Observation Dataset in the
                        BD_Obs Format from Multiple CSV Files This
                        function constructs a unified dataset ('BD_Obs'
                        structure) by merging multiple CSV files, each
                        containing in-situ observations from different
                        stations. The function standardizes the format
                        required by downstream interpolation or bias
                        correction algorithms by aligning all station
                        data into a single 'data.table', with dates as
                        rows and station identifiers as columns.
