{"capabilities":[{"primitive":"query_small_boat_arrivals_daily_v1","data_point":"home_office.small_boats_daily","question":"migration","geography":"national","cadence":"weekly","grain":"daily","measures":["migrants_arrived","boats_arrived","boats_uncontrolled_landings","source_record_count"],"units":{"migrants_arrived":{"unit":"count","measure_type":"tally"},"boats_arrived":{"unit":"count","measure_type":"tally"},"boats_uncontrolled_landings":{"unit":"count","measure_type":"tally"},"source_record_count":{"unit":"count","measure_type":"tally"}},"filters":["as_of","country","date","date_from","date_to","year"],"group_by":["date","year","country"],"answers":["how many migrants arrived in the UK by small boat on a given date (cited to the source cell)","how many small-boat crossings (boats) arrived on a given date, and how many were uncontrolled landings","the daily small-boat arrival trend over time since 2018-01-01 (each day as its own atom)","cumulative or period totals an agent computes itself by summing the daily atoms (we never pre-sum)"],"does_not_answer":["weekly figures or French-side preventions (sheet SB_02 — a separate block, different grain + authority)","nationality, age, sex, or asylum outcome of arrivals (not in this file; see the quarterly tables)","where in the UK arrivals landed beyond the national aggregate (the file has no sub-national geography)","authoritative/final counts (these are provisional weekly figures; the quarterly release is authoritative)","reconciling these counts with the quarterly \"Illegal entry routes\" detections (different source — never pre-joined)"],"represented_fact":"The daily count of migrants detected arriving in the UK in small boats across the English Channel, and the number of boats, served verbatim from the Home Office weekly time series (sheet SB_01) from 2018-01-01. Counts of detections on arrival only — never asylum outcomes, nationality, or French-side preventions (those are separate sheets/series and a different reporting authority). These weekly figures are provisional and differ from the authoritative quarterly \"Illegal entry routes\" release.","source":{"publisher":"Home Office (with Border Force)","url":"https://www.gov.uk/government/publications/migrants-detected-crossing-the-english-channel-in-small-boats","licence":"OGL-v3.0"}}]}