This dataset provides a list of surnames that are reliably Irish and that can be used for identifying textual references to Irish individuals in the London area and surrounding countryside within striking distance of the capital. This classification of the Irish necessarily includes the Irish-born and their descendants. The dataset has been validated for use on records up to the middle of the nineteenth century, and should only be used in cases in which a few mis-classifications of individuals would not undermine the results of the work, such as large-scale analyses. These data were created through an analysis of the 1841 Census of England and Wales, and validated against the Middlesex Criminal Registers (National Archives HO 26) and the Vagrant Lives Dataset (Crymble, Adam et al. (2014). Vagrant Lives: 14,789 Vagrants Processed by Middlesex County, 1777-1786. Zenodo. 10.5281/zenodo.13103). The sample was derived from the records of the Hundred of Ossulstone, which included much of rural and urban Middlesex, excluding the City of London and Westminster. The analysis was based upon a study of 278,949 adult males. Full details of the methodology for how this dataset was created can be found in the following article, and anyone intending to use this dataset for scholarly research is strongly encouraged to read it so that they understand the strengths and limits of this resource:

Adam Crymble, 'A Comparative Approach to Identifying the Irish in Long Eighteenth Century London', _Historical Methods: A Journal of Quantitative and Interdisciplinary History_, vol. 48, no. 3 (2015): 141-152.

The data here provided includes all 283 names listed in Appendix I of the above paper, but also an additional 209 spelling variations of those root surnames, for a total of 492 names.

This dataset provides Census 2021 estimates that classify usual residents aged 3 and over in Northern Ireland who can speak Irish by frequency of speaking Irish. The estimates are as at census day, 21 March 2021.

The census collected information on the usually resident population of Northern Ireland on census day (21 March 2021). Initial contact letters or questionnaire packs were delivered to every household and communal establishment, and residents were asked to complete online or return the questionnaire with information as correct on census day. Special arrangements were made to enumerate special groups such as students, members of the Travellers Community, HM Forces personnel etc. The Census Coverage Survey (an independent doorstep survey) followed between 12 May and 29 June 2021 and was used to adjust the census counts for under-enumeration.

This dataset provides Census 2021 estimates that classify usual residents in Northern Ireland by national identity (person based). This dataset is mutually exclusive; respondents are included in one group only (for example, this classification includes a 'British only' group, 'Irish only' group, and 'British and Irish only' group).

The census collected information on the usually resident population of Northern Ireland on census day (21 March 2021). Initial contact letters or questionnaire packs were delivered to every household and communal establishment, and residents were asked to complete online or return the questionnaire with information as correct on census day. Special arrangements were made to enumerate special groups such as students, members of the Travellers Community, HM Forces personnel etc. The Census Coverage Survey (an independent doorstep survey) followed between 12 May and 29 June 2021 and was used to adjust the census counts for under-enumeration.

This table reports the categories for which there are 10 or more usual residents. Where there are fewer than 10 usual residents for any category, these have been reported in a residual group which may or may not contain 10 or more usual residents in total.

Mixed' indicates a respondent has written-in more than one national identity, the combination of which could not be coded to the existing framework. 'EU' is the European Union and is as defined on Census day (21 March 2021).

Quality assurance report can be found here

This dataset represents ethnic group (19 tick-box level) by economic activity status and by occupation, for England and Wales combined. The census data are also broken down by age and by sex for each subtopic.

The ethnic group that the person completing the census feels they belong to. This could be based on their culture, family background, identity, or physical appearance. Respondents could choose one out of 19 tick-box response categories, including write-in response options.

Total counts for some population groups may not match between published tables. This is to protect the confidentiality of individuals' data. Population counts have been rounded to the nearest 5 and any counts below 10 are suppressed, this is signified by a 'c' in the data tables.

This dataset shows population counts for usual residents aged between 16 to 64 years old only. This is to focus on ethnic groups differences among the working age. Population counts in these tables may be different from other publications which use different age breakdowns.

"Asian Welsh" and "Black Welsh" ethnic groups were included on the census questionnaire in Wales only, these categories were new for 2021.

This dataset provides Census 2021 estimates that classify usual residents in England and Wales by ethnic group. The estimates are as at Census Day, 21 March 2021.

For quality information in general, please read more from here.

For specific quality information about labour market, please read more from here

Ocupation counts classifiy people who were in employment between 15 March and 21 March 2021, by the SOC code that represents their current occupation. (Occupation is classified using the Standard Occupation Classification 2020 version). Details of SOC code can be found here.

Ethnic Group (19 tick-box level)

These are the 19 ethnic group used in this dataset:

• Asian, Asian British or Asian Welsh
  • Bangladeshi
  • Chinese
  • Indian
  • Pakistani
  • Other Asian
• Black, Black British, Black Welsh, Caribbean or African
  • African
  • Caribbean
  • Other Black
• Mixed or Multiple ethnic groups
  • White and Asian
  • White and Black African
  • White and Black Caribbean
  • Other Mixed or Multiple ethnic groups
• White
  • English, Welsh, Scottish, Northern Irish or British
  • Gypsy or Irish Traveller
  • Irish
  • Roma
  • Other White
• Other ethnic group
  • Arab
  • Any other ethnic group

Table showing ethnic group statistics by aggregated groupings.

Categories covered:

• White - includes White British, Irish, Gypsy or Irish Traveller, and Other
• Black - includes Black African, Caribbean, and Other
• Asian - includes Indian, Pakistani, Bangladeshi, Chinese and Other
• Mixed/Other - includes White and Black Caribbean, White and Asian, White and Black African, Other Mixed, Arab and any Other ethnicity not covered above.

Figures may not add exactly due to rounding. Numbers rounded to the nearest thousand.

Data is from the Annual Population Survey.

The UK and Ireland have many native pony breeds, yet there is a lack of comprehensive research investigating their genetic diversity and phylogenetic interrelationships. Many studies contain a limited number of pony breeds, or small sample sizes for these breeds. This may result in erroneous grouping of pony breeds that otherwise have intricate interrelationships with each other and are not evaluated correctly when placed as a token subset of a larger dataset. This is the first study that specifically investigates the genetic diversity within and between British and Irish native pony breeds using large sample numbers from locations of their native origin. This study used a panel of microsatellite markers and sequence analysis of the mitochondrial control region to analyse the genetic diversity within and between 11 pony breeds from Britain and Ireland. A large dataset was collected and previously published data were used to place the British and Irish ponies in a global context. The native ponies of Britain and Ireland were found to have had a complex history and the interrelationships between the breeds were revealed. Overall, high levels of genetic diversity were present, including maintenance of rare ancient matrilines in the Welsh and Fell breeds. In contrast the Dartmoor showed limited maternal diversity. A number of unexpected shared ancestral origins were elucidated between some breeds. The data generated herein provides valuable information to guide and implement the conservation of increasingly rare native genetic resources.

These data are modelled using the OMOP Common Data Model v5.3.Correlated Data SourceNG tube vocabulariesGeneration RulesThe patient’s age should be between 18 and 100 at the moment of the visit.Ethnicity data is using 2021 census data in England and Wales (Census in England and Wales 2021) .Gender is equally distributed between Male and Female (50% each).Every person in the record has a link in procedure_occurrence with the concept “Checking the position of nasogastric tube using X-ray”2% of person records have a link in procedure_occurrence with the concept of “Plain chest X-ray”60% of visit_occurrence has visit concept “Inpatient Visit”, while 40% have “Emergency Room Visit”NotesVersion 0Generated by man-made rule/story generatorStructural correct, all tables linked with the relationshipWe used national ethnicity data to generate a realistic distribution (see below)2011 Race Census figure in England and WalesEthnic Group : Population(%)Asian or Asian British: Bangladeshi - 1.1Asian or Asian British: Chinese - 0.7Asian or Asian British: Indian - 3.1Asian or Asian British: Pakistani - 2.7Asian or Asian British: any other Asian background -1.6Black or African or Caribbean or Black British: African - 2.5Black or African or Caribbean or Black British: Caribbean - 1Black or African or Caribbean or Black British: other Black or African or Caribbean background - 0.5Mixed multiple ethnic groups: White and Asian - 0.8Mixed multiple ethnic groups: White and Black African - 0.4Mixed multiple ethnic groups: White and Black Caribbean - 0.9Mixed multiple ethnic groups: any other Mixed or multiple ethnic background - 0.8White: English or Welsh or Scottish or Northern Irish or British - 74.4White: Irish - 0.9White: Gypsy or Irish Traveller - 0.1White: any other White background - 6.4Other ethnic group: any other ethnic group - 1.6Other ethnic group: Arab - 0.6

This dataset provides Census 2021 estimates that classify usual residents in Northern Ireland by ethnic group.

The census collected information on the usually resident population of Northern Ireland on census day (21 March 2021). Initial contact letters or questionnaire packs were delivered to every household and communal establishment, and residents were asked to complete online or return the questionnaire with information as correct on census day. Special arrangements were made to enumerate special groups such as students, members of the Travellers Community, HM Forces personnel etc. The Census Coverage Survey (an independent doorstep survey) followed between 12 May and 29 June 2021 and was used to adjust the census counts for under-enumeration.

This table reports the categories for which there are 10 or more usual residents. Where there are fewer than 10 usual residents for any category, these have been reported in a residual group which may or may not contain 10 or more usual residents in total.

All ethnic groups are classified within one of the five groups: White, Asian, Black, Mixed, and Other. 'Irish Traveller' is included in 'Other'; this is changed from Census 2011 when 'Irish Traveller' was included in 'White'.

Quality assurance report can be found here

Real time meteorological and oceanographic data collected from the Irish moored Weather Buoy network of stations. Parameters collected include: DateTime (yyyy-mm-ddThh:mm:ss.sss), Atmospheric Pressure (mbar), Air Temperature (degreeCelsius), DewPoint Temperature (degreeCelsius), Wind Speed (knots), Max Gust Wind Speed (knots), Wind Direction (degreeTrue), Sea Surface Temperature (degreeCelsius), Wave Period (seconds), Wave Height (metres) and Relative Humidity (%). Real time data available for M2, M3, M4, M5 and M6. Historical data available for M1, FS1 and original M4 spatial location. The network is managed by the Marine Institute in collaboration with Met Eireann and the UK Met Office. The Irish Weather Buoy Network is designed to improve weather forecasts and safety at sea around Ireland. The buoy network provides vital data for weather forecasts, shipping bulletins, gale and swell warnings as well as data for general public information and research. acknowledgement=The Irish Buoy Network was established in 2000 and maintains five buoys operating around the coast of Ireland. The project was set up through a highly successful collaboration between Met Eireann, the Marine Institute, the UK Met Office and the Department of Transport, Tourism and Sport (DTTAS). Since 2017 the project is run by the Marine Institute in collaboration with Met Eireann funded through the Department of Agriculture and the Marine (DAFM). area=North Atlantic Ocean cdm_data_type=TimeSeries cdm_timeseries_variables=station_id, CallSign, longitude, latitude comment=The buoy previously stationed at M1 was relocated to M6 at the request of the Met Services. At the M1 station data collection was discontinued in 2007. FS1 is an archive dataset. Please note the weather buoys maybe intermittently inoperative during periods of servicing, or due to severe weather damage, vessel strikes or component failure. Any periods of in operation may result in gaps in the data record depending on the nature of the failure. contact=data_requests@marine.ie contributor_name=Guy Westbrook, Kieran Lyons contributor_role=ProjectMember, ProjectMember Conventions=SeaDataNet_1.0, CF-1.6, OceanSITES-1.3, ACDD-1.2 data_mode=M data_type=OceanSITES time-series data defaultDataQuery=&time>=now-6hours defaultGraphQuery=longitude,latitude,AtmosphericPressure&time>=now-120minutes&latitude>=50&latitude<=56&longitude>=-17&longitude<=-5&.draw=markers&.marker=5|5&.land=over Easternmost_Easting=-5.4302 featureType=TimeSeries geospatial_lat_max=54.999967 geospatial_lat_min=51.215956 geospatial_lat_units=degrees_north geospatial_lon_max=-5.4302 geospatial_lon_min=-15.88135 geospatial_lon_units=degrees_east geospatial_vertical_max=0 geospatial_vertical_min=0 geospatial_vertical_positive=down geospatial_vertical_units=meters history=2020-05-11: Metadata attributes enhanced following OceanSITES, SeaDataNet and CMEMs attribute and vocabulary requirements. id=ie.marine.data:dataset.2783 infoUrl=http://data.marine.ie/geonetwork/srv/eng/catalog.search#/metadata/ie.marine.data:dataset.2783 institution=Marine Institute institution_edmo_code=396 institution_references=www.marine.ie keywords_vocabulary=SeaDataNet Parameter Discovery Vocabulary license_URL=https://creativecommons.org/licenses/by/4.0/legalcode naming_authority=Marine Institute network=Irish Weather Buoy Network Northernmost_Northing=54.999967 principal_investigator=Aodhan Fitzgerald principal_investigator_url=http://www.marine.ie/Home/site-area/data-services/real-time-observations/irish-marine-data-buoy-observation-network processing_level=Instrument data that has been converted to geophysical values source=moored surface buoy source_platform_category_code=41 sourceUrl=(source database) Southernmost_Northing=51.215956 standard_name_vocabulary=CF-72 subsetVariables=station_id, CallSign, longitude, latitude time_coverage_resolution=PT1H time_coverage_start=2001-02-06T13:00:00Z Westernmost_Easting=-15.88135

Extreme Sea Level values is part of Coastal Design/Extreme Sea Levels, a GIS dataset and supporting information providing design / extreme sea level and typical surge information around the coastline of the UK, including England, Wales, Scotland, Northern Ireland, Isle of Man and Jersey. The information is relevant under present day (year 2018) conditions and does not account for future changes due to climate change, such as sea level rise. This is a specialist dataset which informs on work commenced around the coast ranging from coastal flood modelling, scheme design, strategic planning and flood risk assessments. Extreme Sea Level values describes the extreme sea levels for 16 different annual probabilities of exceedance. Confidence levels relating to the 5% and 95% lower and upper bounds of confidence are included. Mean High Water Spring (MHWS) and Highest Astronomical Tide (HAT) predicted tide levels are also included in the dataset for some sites but may not be used for navigational purposes. This 2018 update to the Coastal Design Sea Levels dataset was carried out in partnership for the UK Coastal Flood Forecasting partnership, which includes the Environment Agency (EA), Scottish Environment Protection Agency (SEPA), Natural Resources Wales (NRW) and the Department for Infrastructure Northern Ireland (DfINI). The main project outputs include: Coastal flood boundary conditions for the UK: technical summary report Coastal flood boundary conditions for the UK: user guide Coastal design sea levels – coastal flood boundary surge shapes (2018) GIS output in British National Grid projection The main project outputs are available at the UK open data portal – see link below (https://data.gov.uk/dataset/73834283-7dc4-488a-9583-a920072d9a9d/coastal-design-sea-levels-coastal-flood-boundary-extreme-sea-levels-2018) The surge shape spreadsheet is also available at the link below (https://environment.data.gov.uk/dataset/84c97c5e-d465-11e4-afbd-f0def148f590) This dataset is an extract from the overall UK wide project that contains GIS output covering Northern Ireland. For convenience, this GIS dataset has been re-projected to Irish Grid.

In 1703 territorial waters were defined as extending out to three nautical miles of the coast - the distance that could be covered by a cannon shot. In 1958 the Geneva Convention introduced the concept of baselines from which all other measurements would begin. Baselines were to be smooth and parallel too, rather than following the detailed indentations of the coast. Baselines join headlands and may run to the low-water mark of islands. All waters - marine and transitional (estuarine) on the landward side of baselines - are part of the internal (inland) waters of the State. The territorial sea extends out to 12 nautical miles from the baselines. The Irish Republic territorial sea covers an area of 27,487 km squared. The area covered by internal waters is 13,650 km squared.

Species Groups recorded: bird Dataset Status: The dataset available through Biodiversity Maps is for the island of Ireland but is only a subset of the larger British and Irish dataset held by the BTO. It was used to produce the first British Trust for Ornithology /Irish Wildbird Conservancy (now BirdWatch Ireland) winter bird atlas published as Lack, P. (1986) The Atlas of Wintering Birds in Britain and Ireland. T. & A.D. Poyser, Calton. Additional Information: Full details of the methods used in the field, how fieldwork was organised and the interpretation of the maps is provided in the published atlas Lack, P. (1986) The Atlas of Wintering Birds in Britain and Ireland. T. & A.D. Poyser, Calton, or from the British Trust for Ornithology website at www.bto.org/birdatlas/previous/old_methods.htm. Specific queries as they relate to the Republic of Ireland should be made to BirdWatch Ireland at info@birdwatchireland.ie

The aims of the research project from which this digital resource arose were to facilitate more effective research into the history of Anglo-Irish relations in the Middle Ages, with special emphasis on the economic and social aspects of these relations, and to broaden the knowledge base of scholars working on economic relations between England and Ireland in the medieval period. The objectives were to identify Irish material from TNA which already existed in print and assess the reliability of these publications in order to decide whether researchers should be advised to consult the original documents, to publish previously unpublished Irish records, and to indicate to researchers where more unpublished Irish material might be found. Historians working on late medieval Ireland have tended to concentrate on a small number of series kept in TNA in search of relevant material. This project should encourage them to cast their nets much wider in the realistic hope of profitable catches. It has also proved difficult in the past to know which TNA documents have appeared in print, and how much reliance to place on these published transcripts and calendars. This project goes a long way towards removing this difficulty. In terms of new documents brought to light, the project should stimulate renewed interest in the fifteenth century, which has been relatively neglected in the past, partly because of the assumption that little surviving manuscript material remained. The digital resource consists of two files. One made up of documents relating to Ireland from series catalogued by TNA as 'Ancient Deeds', the other of Irish material from series of inquisition material. Most of the 64,000 documents in the Ancient Deeds series concern conveyances of land between private individuals or those pertaining to religious houses in England, which had subsequently been acquired by the Crown through forfeiture, purchase, escheat upon death without heir, or the dissolution of the monasteries. Others relate to transactions concerning individuals or ecclesiastical establishments in Scotland, Wales and Ireland, while a sizeable and significant miscellany of exchequer bills, writs and receipts, bonds and indentures, letters patent of appointment, attorney and indulgence, and wills and testaments supply the remainder. They thus constitute one of the most important resources for the study of landholding within the medieval British Isles. An inquisition was a legal enquiry held at the command of the king to provide answers to specific questions concerning the rights of the Crown. The different kinds of inquisition shared important features: they were conducted before officers of the Crown in or near the locality with which they were concerned; they heard evidence from local witnesses; they relied upon juries of local men to answer the questions asked.

The 'End of the Pier' Menai Strait data set is a collection of biogeochemical and physical parameters (including temperature, salinity, transmittance and attenuation of the water column) measured in the Menai Strait since 1955.The aim is to concatenate data both historical and current, preventing the loss of valuable information and creating a time series for a variety of parameters in a unique environment. Data have been extracted from Ph.D. and M.Sc. theses undertaken at the School of Ocean Sciences (SOS) at Bangor University, in addition to published sources. In all cases data has undergone a very thorough quality audit and sufficient detail is provided so that the original source may be located. Data collection is ongoing but the British Oceanographic Data Centre (BODC) only holds data up to 2003.

The BRITICE Glacial Mapping Project: version two release (2017) is a map and GIS database of glacial landforms related to the last British-Irish Ice Sheet. Maps and GIS data are freely downloadable from the website, including an online GIS where you can zoom to your area of interest.

In this repository, we provide Gzip files for:

• Curated Metadata: A manually curated dataset with detailed information on geographic location, temporal classification, sample quality, raw sequencing data accession numbers, and other relevant attributes (COMMIOS_aadr_ref_v62.tsv.gz).
• Genotypes: Provided in EIGENSTRAT format, including genotype calls for approximately 1.23 million SNPs (1240k) and the Human Origins array with 597,573 sites (HO).

Version History:

• May 2025 - v1.0.0
  • First version released based on AADR V62:
    • The complete dataset includes 1,108 ancient British and Irish individuals, 1,164 modern individuals and 4,618 ancient Western European individuals.

The primary goal of the Irish Groundfish Survey is to develop estimates of juvenile abundance for important fish species. Measurements of the abundance of juvenile fish are a critical measure of the health of a stock, serving as an annual indication of recruitment (the number of newly spawned fish which enter the population each year) success or failure. Most importantly, they allow forecasting of future commercial abundance. In addition, the Irish Groundfish Survey provides data on the distribution and biology of commercial and non-commercial species of ecological interest, as well as hydrographic and environmental observations. When these data are combined with annual recruitment indices they can help identify the possible causes driving year-class success or failure, and allow us to see long-term changes in populations that may have been caused by fishing, pollution, or climate change. This spatial dataset comprises the haul station location from the trawl survey. The Irish Groundfish Survey feeds into the International Bottom Trawl Survey [ie. IBTS] for international reporting. The first survey took place in 1990 and is an annual survey since. This dataset covers from 2003-2009 period. This spatial dataset is a web viewer service which provides the user with the opportunity to choose the species, survey, and strata parameters and download the results to their own system.

The Shelf Sea Biogeochemistry (SSB) data set comprises hydrographic data, including measurements of temperature, salinity and currents, complemented by bathymetric and meteorological data. The study area is located in the Celtic Sea, shelf seas and shelf-edges around the United Kingdom and Republic of Ireland. The data were collected by a combination of research cruises that spanned from March 2014 to September 2015. Shipboard data collection involved the deployment of conductivity-temperature-depth (CTD) packages in the study area. Continuous measurements of current velocities (using vessel mounted ADCPs, VMADCPs), bathymetry and surface ocean and meteorological properties were collected throughout each cruise. Moorings were deployed in the Celtic Sea in early 2014 and provided approximately two years worth of hydrographic time series data. The SSB programme aims to increase the understanding of the cycling of nutrients and carbon and the controls on primary and secondary production, and their role in wider biogeochemical cycles, which in turn will significantly improve predictive marine biogeochemical and ecosystem models over a range of scales. SSB brings together UK researchers from Bangor University, Centre for Environment, Fisheries and Aquaculture Science (CEFAS), Meteorological Office, National Oceanography Centre (NOC), Plymouth Marine Laboratory (PML), Scottish Association for Marine Science (SAMS), University of Aberdeen, University of East Anglia (UEA), University of Edinburgh, University of Liverpool, University of Oxford, University of Portsmouth and University of Southampton. It also has UK and Irish partners, as Agri-Food and Biosciences Institute (AFBI), Marine Institute and Marine Scotland Science. The programme was divided into five work packages, having Jonathan Sharples as the Principal Investigator for work package 1 (CANDYFLOSS), Martin Solan as Principal Investigator for work package 2 (Biogeochemistry, macronutrient and carbon cycling in the benthic layer), Peter J. Statham as Principal Investigator for work package 3 (Supply of iron from shelf sediments to the ocean), Icarus Allen as Principal Investigator for work package 4 (Integrative Modelling for Shelf Seas Biogeochemistry) and Keith Weston as Principal Investigator for work package 5 (Blue Carbon – How much carbon is stored in UK shelf seas, what influences storage and could it be used in carbon trading?). All data will be managed by the British Oceanographic Data Centre (BODC).

Reports, images, GIS and gridded products describing the Palaeozoic geology and conventional petroleum systems of parts of the UK offshore from the greater Irish Sea area. Carboniferous rocks were the focus in areas from the Firth of Clyde, Solway Basin, Manx-Peel Basin to the East Irish Sea Basin and surrounding areas (Quadrants 110-126). The peer-reviewed products were produced for the 21CXRM Palaeozoic Project by BGS for DECC/OGA, Oil and Gas UK and oil company sponsors between November 2014 and May 2016, to improve regional digital datasets and knowledge of the underexplored Palaeozoic petroleum systems, and to stimulate exploration. The petroleum systems analysis was based on new interpretations of well, seismic, gravity-magnetic and source rock datasets, integrated with petrophysical studies, basin modelling and UK onshore knowledge. Released data were collated and interpreted, and interpretations of unreleased data were included with agreement of the data owners. Unreleased raw data is excluded. The datasets are applicable for use at scales between 1: 750,000 to 1: 3,000,000.

This dataset provides Census 2021 estimates that classify usual residents in Northern Ireland by their national identity (person based). The estimates are as at census day, 21 March 2021. The national identity classification used is the is a 36-category classification corresponding to the tick box options and write-in responses on the census questionnaire with at least 1,000 responses. This dataset is mutually exclusive; respondents are included in one group only (for example, this classification includes a 'British only' group, 'Irish only' group, and 'British and Irish only' group).

The census collected information on the usually resident population of Northern Ireland on census day (21 March 2021). Initial contact letters or questionnaire packs were delivered to every household and communal establishment, and residents were asked to complete online or return the questionnaire with information as correct on census day. Special arrangements were made to enumerate special groups such as students, members of the Travellers Community, HM Forces personnel etc. The Census Coverage Survey (an independent doorstep survey) followed between 12 May and 29 June 2021 and was used to adjust the census counts for under-enumeration.