AQD - Adjustment Type Submitted None Data Dictionary Vocabularies Eionet Data Dictionary Fully corrected All corrections for natural source & winter sanding or salting applied Valid Data Dictionary Vocabularies Eionet Data Dictionary AQD - Adjustment Type No corrections applicable No adjustment is due to NS or WSS have been applied or are applicable to the observed levels for this pollutant. Valid Data Dictionary Vocabularies Eionet Data Dictionary AQD - Adjustment Type None applied No corrections have been applied to adjust for contributions from natural sources or winter sanding & salting. Valid Data Dictionary Vocabularies Eionet Data Dictionary AQD - Adjustment Type Natural source correction An adjustment to corrected observed concentrations for contributions from natural sources has been applied. Valid Data Dictionary Vocabularies Eionet Data Dictionary AQD - Adjustment Type Winter-sanding or -salting correction An adjustment to corrected observed concentrations for contributions from winter sanding or salting has been applied. Valid Data Dictionary Vocabularies Eionet Data Dictionary AQD - Adjustment Type