Returns a tibble or an AQS_DataMart_APIv2 S3
object with the list and definitions of fields in the
service requested.
Arguments
- service
a string which represents the services provided by the AQS API. For a list of available services, refer to https://aqs.epa.gov/aqsweb/documents/data_api.html#services
- return_header
If FALSE (default) only returns data requested. If TRUE returns a AQSAPI_v2 object which is a two item list that contains header information returned from the API server mostly used for debugging purposes in addition to the data requested.