LAGOSUS Data sources
| Variable name | Variable description | Units |
| source_code | a short codename used for the source dataset in LAGOS-US variables or metadata | |
| source_name | the name of the source dataset | |
| source_shortname | the abbreviated name used to refer to the source dataset in LAGOS-US documentation | |
| source_description | a brief description of the source dataset | |
| source_provider | the provider of the source dataset (government agency, publication citation, etc.) | |
| source_citation | the citation for the source dataset, including the download link used to acquire the dataset at the time of LAGOS-US creation | |
| source_url | The principal website associated with the source dataset. This may not be the same as the download URL included in the citation. | |
| source_metadata_url | a website URL where metadata and data use guidance for the source dataset can be found | |
| source_spatial_resolution | the spatial resolution of the source dataset, if applicable | |
| source_time_period | the time period captured by the source dataset, if applicable | |
| source_access_date | the date(s) the source dataset was acquired for use in creating LAGOS-US | |
| source_data_type | the data value type contained in the source dataset, if applicable |