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Advanced Global Atmospheric Gases Experiment Science Team(AGAGE), Agency for Meteorology, Climatology and Geophysics, Agency on Hydrometeorology under Ministry of Emergency Situations of the Kyrgyz Republic, Atmospheric Chemistry Research Group School of Chemistry University of Bristol, British Antarctic Survey, CNR-Institute of Atmospheric Pollution Research, Commonwealth Scientific and Industrial Research Organisation, Czech Hydrometeorological Institute, Direccion Meteorologica de Chile, Environment and Climate Change Canada, Federal Environment Agency Austria, German Environment Agency, German Meteorological Service, Global Monitoring Laboratory, NOAA, Institute for Nuclear Research and Nuclear Energy, Japan Meteorological Agency, Kenya Meteorological Department, Korea Meteorological Administration, Laboratoire d'Aérologie, Laboratoire de Météorologie Physique, Laboratoire des Sciences du Climat et de l'Environnement, Meteorological Research Institute, National Institute in Space Research, National Institute of Public Health and the Environment, National Institute of Water & Atmospheric Research Ltd., National Physical Laboratory, National Research Council, Institute of Atmospheric Sciences and Climate, National Weather Service, Office National de la Meteorologie, Slovenian Environment Agency, South African Weather Service, State Meteorological Agency of Spain, Swiss Federal Laboratories for Materials Science and Technology, The Hong Kong Polytechnic University, University of Exeter, University of Malta, University of Urbino, Dep. of Pure and Applied Sciences (DISPEA), University of York, Viet Nam Meteorological and Hydrological Administration,

Adelaide Dinoi (ISAC), Adéla Holubová (CHMI), Alfred Micallef (UMLT), Arifin, Ikhsan Buyung (BMKG), Carlos Torres (AEMET), Casper Labuschagne (SAWS), Cedric Couret (UBAG), Chris Rennick (NPL), Christian Plass-Dulmer (DWD), Christoph Zellweger (Empa), Claudia Calidonna (ISAC), Colm Sweeney (NOAA), Dafina Kikaj (NPL), Dagmar Kubistin (DWD), Dan Smale (NIWA), Daniel Gullì (ISAC), David Murithi Njiru (KMD), Dickon Young (UNIVBRIS), Doug Worthy (ECCC), E Kozlova (UoE), Edward Chung (NPL), Elise Guerette (CSIRO), Emmal Safi (NPL), Francescopiero Calzolari (ISAC), Frank Meinhardt (UBAG), Freya Squires (BAS), Gabrielle Petron (NOAA), Gaston Torres (DMC), Gheusi Francois (LA), Giorgia De Bendetto (ISAC), Giorgio Tranchida (IASCNR), Giovanni Giacalone (IASCNR), Gulzhan Esenzhanova (Kyrgyzhydromet), Hidekazu Matsueda (MRI), Ignazio Fontana (IASCNR), Iris Buxbaum (UBAA), Ivano Ammoscato (ISAC), Jean Sciare (LSCE), Jennifer Müller-Williams (DWD), Jgor Arduini (UNIURB), Joseph Pitt (UNIVBRIS), Jörg Klausen (MeteoSwiss), Ka Se Lam (PolyU), Katie Read (UYRK), Kazuhiro Tsuboi (MRI), Kieran Stanley (UNIVBRIS), Lino Condori (SMNA), Luana Malacaria (ISAC), Luciana Vanni Gatti (INPE), Lucy Carpenter (UYRK), Ludwig Ries (UBAG), Mariantonia Bencardino (IIA), Martin Saliba (UMLT), Martin Steinbacher (Empa), Marvic Grima (UMLT), Masao Ishii (MRI), Mateja Gjerek (ARSO), Mathew Mutuku (KMD), Matthias Lindauer (DWD), Maurizio Busetto (ISAC), Meyerfeld Yves (LA), Michela Maione (UNIURB), Nahas, Alberth Christian (BMKG), Nguyen Nhat Anh (VNMHA), Okaem, Tanti Tritama (BMKG), Paolo Cristofanelli (ISAC), Paul Fraser (CSIRO), Paul Krummel (CSIRO), Pedro Rivas (AEMET), Pichon Jean-Marc (LAMP), Primož Dolenc (ARSO), Ray Langenfelds (CSIRO), Ray Wang (EAS), Reza Mahdi (BMKG), Ronald Spoor (RIVM), Salvatore Sinopoli (ISAC), SE-HWAN YANG (KMA), Sidi Baika (ONM), Simon O'Doherty (UNIVBRIS), Sylvia Nichol (NIWA), TAKATSUJI Shinya (JMA), Tanja Koleša (ARSO), Thomas Seitz (Empa), Todor Arsov (INRNE), Wolfgang Spangl (UBAA), Zoë Loh (CSIRO), WDCGG; All CO data contributed to WDCGG by GAW stations and mobiles by 2025-09-10, (Reference date^*: YYYY/MM/DD)

* As the reference date, please indicate the date you downloaded the files.