Ambient Air Quality Monitoring Systems

Country *
—Please choose an option—AfghanistanAlbaniaAlgeriaAndorraAngolaAntigua and BarbudaArgentinaArmeniaAustraliaAustriaAustrian EmpireAzerbaijanBaden*The BahamasBahrainBangladeshBarbadosBavaria*BelarusBelgiumBelizeBenin (Dahomey)BoliviaBosnia and HerzegovinaBotswanaBrazilBruneiBrunswick and LüneburgBulgariaBurkina Faso (Upper Volta)BurmaBurundiCabo VerdeCambodiaCameroonCanadaThe Cayman IslandsCentral African RepublicCentral American Federation*ChadChileChinaColombiaComorosThe Congo Free StateCosta RicaCote d’Ivoire (Ivory Coast)CroatiaCubaCyprusCzechiaCzechoslovakiaDemocratic Republic of the CongoDenmarkDjiboutiDominicaDominican RepublicThe Duchy of ParmaEast Germany (German Democratic Republic)*EcuadorEgyptEl SalvadorEquatorial GuineaEritreaEstoniaEswatiniEthiopiaFederal Government of Germany (1848-49)*FijiFinlandFranceGabonThe GambiaGeorgiaGermanyGhanaThe Grand Duchy of TuscanyGreeceGrenadaGuatemalaGuineaGuinea-BissauGuyanaHaitiHanover*Hanseatic Republics*Hawaii*Hesse*Holy SeeHondurasHungaryIcelandIndiaIndonesiaIranIraqIrelandIsraelItalyJamaicaJapanJordanKazakhstanKenyaKingdom of Serbia/Yugoslavia*KiribatiKoreaKosovoKuwaitKyrgyzstanLatviaLebanonLesothoLew Chew (Loochoo)*LiberiaLibyaLiechtensteinLithuaniaLuxembourgMadagascarMalawiMalaysiaMaldivesMaliMaltaMarshall IslandsMauritaniaMauritiusMecklenburg-Schwerin*Mecklenburg-Strelitz*MexicoMicronesiaMoldovaMonacoMongoliaMontenegroMoroccoMozambiqueNamibiaNassau*NauruNepalThe NetherlandsNew ZealandNicaraguaNigerNigeriaNorth German Confederation*North German Union*North MacedoniaNorwayOldenburg*OmanOrange Free State*PakistanPalauPanamaPapal States*Papua New GuineaParaguayPeruPhilippinesPiedmont-Sardinia*PolandPortugalQatarRepublic of Genoa*Republic of Korea (South Korea)Republic of the CongoRomaniaRussiaRwandaSaint Kitts and NevisSaint LuciaSaint Vincent and the GrenadinesSamoaSan MarinoSao Tome and PrincipeSaudi ArabiaSchaumburg-Lippe*SenegalSerbiaSeychellesSierra LeoneSingaporeSlovakiaSloveniaThe Solomon IslandsSomaliaSouth AfricaSouth SudanSpainSri LankaSudanSurinameSwedenSwitzerlandSyriaTajikistanTanzaniaTexas*ThailandTimor-LesteTogoTongaTrinidad and TobagoTunisiaTurkeyTurkmenistanTuvaluTwo Sicilies*UgandaUkraineUnion of Soviet Socialist Republics*The United Arab EmiratesThe United KingdomUruguayUzbekistanVanuatuVenezuelaVietnamWürttemberg*YemenZambiaZimbabwe

Country *
—Please choose an option—AfghanistanAlbaniaAlgeriaAndorraAngolaAntigua and BarbudaArgentinaArmeniaAustraliaAustriaAustrian EmpireAzerbaijanBaden*The BahamasBahrainBangladeshBarbadosBavaria*BelarusBelgiumBelizeBenin (Dahomey)BoliviaBosnia and HerzegovinaBotswanaBrazilBruneiBrunswick and LüneburgBulgariaBurkina Faso (Upper Volta)BurmaBurundiCabo VerdeCambodiaCameroonCanadaThe Cayman IslandsCentral African RepublicCentral American Federation*ChadChileChinaColombiaComorosThe Congo Free StateCosta RicaCote d’Ivoire (Ivory Coast)CroatiaCubaCyprusCzechiaCzechoslovakiaDemocratic Republic of the CongoDenmarkDjiboutiDominicaDominican RepublicThe Duchy of ParmaEast Germany (German Democratic Republic)*EcuadorEgyptEl SalvadorEquatorial GuineaEritreaEstoniaEswatiniEthiopiaFederal Government of Germany (1848-49)*FijiFinlandFranceGabonThe GambiaGeorgiaGermanyGhanaThe Grand Duchy of TuscanyGreeceGrenadaGuatemalaGuineaGuinea-BissauGuyanaHaitiHanover*Hanseatic Republics*Hawaii*Hesse*Holy SeeHondurasHungaryIcelandIndiaIndonesiaIranIraqIrelandIsraelItalyJamaicaJapanJordanKazakhstanKenyaKingdom of Serbia/Yugoslavia*KiribatiKoreaKosovoKuwaitKyrgyzstanLatviaLebanonLesothoLew Chew (Loochoo)*LiberiaLibyaLiechtensteinLithuaniaLuxembourgMadagascarMalawiMalaysiaMaldivesMaliMaltaMarshall IslandsMauritaniaMauritiusMecklenburg-Schwerin*Mecklenburg-Strelitz*MexicoMicronesiaMoldovaMonacoMongoliaMontenegroMoroccoMozambiqueNamibiaNassau*NauruNepalThe NetherlandsNew ZealandNicaraguaNigerNigeriaNorth German Confederation*North German Union*North MacedoniaNorwayOldenburg*OmanOrange Free State*PakistanPalauPanamaPapal States*Papua New GuineaParaguayPeruPhilippinesPiedmont-Sardinia*PolandPortugalQatarRepublic of Genoa*Republic of Korea (South Korea)Republic of the CongoRomaniaRussiaRwandaSaint Kitts and NevisSaint LuciaSaint Vincent and the GrenadinesSamoaSan MarinoSao Tome and PrincipeSaudi ArabiaSchaumburg-Lippe*SenegalSerbiaSeychellesSierra LeoneSingaporeSlovakiaSloveniaThe Solomon IslandsSomaliaSouth AfricaSouth SudanSpainSri LankaSudanSurinameSwedenSwitzerlandSyriaTajikistanTanzaniaTexas*ThailandTimor-LesteTogoTongaTrinidad and TobagoTunisiaTurkeyTurkmenistanTuvaluTwo Sicilies*UgandaUkraineUnion of Soviet Socialist Republics*The United Arab EmiratesThe United KingdomUruguayUzbekistanVanuatuVenezuelaVietnamWürttemberg*YemenZambiaZimbabwe