List and filter observations (including for multiple sampling points)

(Pagination) Number of records to skip

(Pagination) Maximum number of records to return

Filter by determinand code(s), optionally as a comma-separated list

Filter by sampling purpose code(s), optionally as a comma-separated list

Filter by Sample/Sampling notation

Filter by exact date (ISO format: YYYY-MM-DD), cannot be used with dateFrom/dateTo

Filter by date range start (ISO format: YYYY-MM-DD)

Filter by date range end (ISO format: YYYY-MM-DD)

Filter for compliance samples only

Filter by sample material type code(s), optionally as a comma-separated list

OS Grid easting coordinate for radius-based search

OS Grid northing coordinate for radius-based search

Latitude coordinate for radius-based search

Longitude coordinate for radius-based search

Search radius in kilometers for geographic queries

Filter by pre-defined area using format area_type,area_notation (e.g. environment_agency,YOR)

Filter by exact notation, optionally as a comma-separated list of no more than 100 notations

Filter by prefLabel (contains)

Filter by region code

Filter by area code

Filter by subArea code

Filter by status code

Filter by single|multiple point type code e.g. 'FJ,SA'

Coordinate Reference System URI for response, e.g. http://www.opengis.net/def/crs/EPSG/0/27700 or http://www.opengis.net/def/crs/EPSG/0/4326

Whether to include the CSV Header row in the response.

Content negotiation header to specify version of the API to use.