"For Scientific purposes, access to these data is unlimited and provided without charge. By their use you accept that an offer of co-authorship will be made through personal contact with the data providers or owners whenever substantial use is made of their data. In all cases, an acknowledgement must be made to the data providers or owners and to the data centre when these data are used within a publication."

Advanced Global Atmospheric Gases Experiment Science Team(AGAGE), Atmospheric Chemistry Research Group School of Chemistry University of Bristol, Commonwealth Scientific and Industrial Research Organisation, Environment and Climate Change Canada, German Environment Agency, German Meteorological Service, Global Monitoring Laboratory, NOAA, Italian National Agency for New Technologies, Energy and Sustainable Economic Development, Japan Meteorological Agency, Korea Meteorological Administration, Meteorological Research Institute, Nagoya University, National Institute for Environmental Studies, National Institute in Space Research, National Institute of Environmental Research, National Institute of Meteorological Research, KMA, National Institute of Water & Atmospheric Research Ltd., National Physical Laboratory, Norwegian Institute for Air Research, South African Weather Service, State Meteorological Agency of Spain, Swiss Federal Laboratories for Materials Science and Technology, Tohoku University, University of Exeter, University of Urbino, Dep. of Pure and Applied Sciences (DISPEA),

A. Matsunami (NAGOU), Alcide di Sarra (ENEA), Bradley D. Hall (NOAA), Cedric Couret (UBAG), Chris Rennick (NPL), Christian Plass-Dulmer (DWD), Christina Harth (SIO), Colm Sweeney (NOAA), Daegeun Shin (KMA), Dagmar Kubistin (DWD), Damiano Sferlazzo (ENEA), Debra J. Mondeel (NOAA), Dickon Young (UNIVBRIS), Doug Worthy (ECCC), E Kozlova (UoE), Elise Guerette (CSIRO), Emilio Cuevas (AEMET), ENYO Kazutaka (JMA), Eunjung Kim (GERC), Francesco Monteleone (ENEA), Frank Meinhardt (UBAG), Geoffrey S. Dutton (NOAA), Haeyoung Lee (KMA), J. David Nance (NOAA), Jennifer Müller-Williams (DWD), Jens Mühle (SIO), Jgor Arduini (UNIURB), Jiyoung Kim (GERC), Joseph Pitt (UNIVBRIS), Kazuhiro Tsuboi (MRI), Kentaro ISHIJIMA (MRI), Kieran Stanley (UNIVBRIS), Luciana Vanni Gatti (INPE), Lynwill Martin (SAWS), Martin Steinbacher (Empa), Matthias Lindauer (DWD), ONO Etsuro (JMA), Ove Hermansen (NILU), Park Hyo-Jin (KMA), Paul Fraser (CSIRO), Paul Krummel (CSIRO), Pedro Rivas (AEMET), Ray F. Weiss (SIO), Ray Langenfelds (CSIRO), Ray Wang (EAS), Salvatore Piacentino (ENEA), Shinji Morimoto (TU), Simon O'Doherty (UNIVBRIS), Stephen A. Montzka (NOAA), Sylvia Nichol (NIWA), TAKATSUJI Shinya (JMA), Tatiana Di Iorio (ENEA), Thumeka Mkololo (SAWS), Xin Lan (NOAA), Yasunori TOHJIMA (NIES), Zoë Loh (CSIRO), WDCGG; All N₂O data contributed to WDCGG by GAW stations and mobiles by 2025-06-11, (Reference date^*: YYYY/MM/DD)

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