Fig. 1From: Association and interaction of O3 and NO2 with emergency room visits for respiratory diseases in Beijing, China: a time-series studyAssociations of air pollutants (O3, NO2, OX and Oxwt) with emergency room visits for respiratory diseases at lag 05 day during 2014–2019. NOTE: O3, ozone; NO2, nitrogen dioxide; OX, oxidant capacity; Oxwt, redox-weighted oxidant capacity; TRD, total respiratory disease; AURI, acute upper respiratory infection; LRTI, lower respiratory tract infection; COPD, chronic obstructive pulmonary diseaseBack to article page