true Retro assessment regime for 2021. Monitoring data for calendar year 2021 was significantly affected by equipment breakdown and delays to service or repair caused by travel disruption associated with the Covid-19 pandemic. As a result, for this assessment no data capture threshold has been applied to remove data. As a result, data capture over 85% has been classified as fixed. Data capture below 85% has been included and classified as 'indicative' rather than omitted. Gibraltar is a small spatial area and has no excess monitoring to rely upon where an instrument fails. This approach therefore utilises the monitoring data that is available and is considered preferable to using Objective Estimation. Where data captures are low, the concentrations were sufficiently below the Limit and Target Values (and consistent with historical data) to provide confidence that levels remain compliant with the Air Quality Directives. AQ_ReportHeader_68 gib.air-quality retro-25-08-2022-13 Liesl Mesilio-Torres H.M. Government of Gibraltar, Department of the Environment eng Department of the Environment, Suite 1B Leanse Place, Town Range, Gibraltar Gibraltar n/a http://www.gibraltar.gov.gi/environment/environment 2021-01-01T00:00:00+01:00 2021-12-31T23:59:59+01:00 Liesl Mesilio-Torres H.M. Government of Gibraltar, Department of the Environment eng Department of the Environment, Suite 1B Leanse Place, Town Range, Gibraltar Gibraltar n/a http://www.gibraltar.gov.gi/environment/environment Liesl Mesilio-Torres H.M. Government of Gibraltar, Department of the Environment eng Department of the Environment, Suite 1B Leanse Place, Town Range, Gibraltar Gibraltar n/a http://www.gibraltar.gov.gi/environment/environment Liesl Mesilio-Torres H.M. Government of Gibraltar, Department of the Environment eng Department of the Environment, Suite 1B Leanse Place, Town Range, Gibraltar Gibraltar n/a http://www.gibraltar.gov.gi/environment/environment Liesl Mesilio-Torres H.M. Government of Gibraltar, Department of the Environment eng Department of the Environment, Suite 1B Leanse Place, Town Range, Gibraltar Gibraltar n/a http://www.gibraltar.gov.gi/environment/environment Liesl Mesilio-Torres H.M. Government of Gibraltar, Department of the Environment eng Department of the Environment, Suite 1B Leanse Place, Town Range, Gibraltar Gibraltar n/a http://www.gibraltar.gov.gi/environment/environment Liesl Mesilio-Torres H.M. Government of Gibraltar, Department of the Environment eng Department of the Environment, Suite 1B Leanse Place, Town Range, Gibraltar Gibraltar n/a http://www.gibraltar.gov.gi/environment/environment GIB_AssessmentRegime_435 gib.air-quality retro-25-08-2022-13 2021-01-01 http://www.gibraltarairquality.gi/assets/documents/Gibraltar_mra_2010-1014_report_v2.pdf Automatic & sampler based fixed measurements of ambient air pollution GIB_AssessmentRegime_417 gib.air-quality retro-25-08-2022-13 2020-01-01 http://www.gibraltarairquality.gi/assets/documents/Gibraltar_mra_2010-1014_report_v2.pdf Automatic & sampler based fixed measurements of ambient air pollution GIB_AssessmentRegime_440 gib.air-quality retro-25-08-2022-13 2021-01-01 http://www.gibraltarairquality.gi/assets/documents/Gibraltar_mra_2010-1014_report_v2.pdf Automatic & sampler based fixed measurements of ambient air pollution GIB_AssessmentRegime_438 gib.air-quality retro-25-08-2022-13 2021-01-01 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