A country's national radon database includes different types of data where measurement data involves measurement of radon gas concentration; mitigation data involves steps taken in existing buildings to reduce indoor radon concentration, generally by reducing radon entry (also referred to as remediation); and prevention data involves measures installed during construction of new buildings to prevent the entry of radon.
Response options include "Yes" - The data is present in the database, "No" - The data is absent from the database.
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