Level of interference Valid None Data Dictionary Vocabularies Eionet Data Dictionary Moderate Valid Data Dictionary Vocabularies Eionet Data Dictionary Level of interference At least moderate Valid Data Dictionary Vocabularies Eionet Data Dictionary Level of interference A little Valid Data Dictionary Vocabularies Eionet Data Dictionary Level of interference A lot Valid Data Dictionary Vocabularies Eionet Data Dictionary Level of interference Extreme Valid Data Dictionary Vocabularies Eionet Data Dictionary Level of interference None Valid Data Dictionary Vocabularies Eionet Data Dictionary Level of interference