Fig. 2

The cumulative associations between mean temperature and daily hospital outpatient visits for total respiratory diseases, asthma, COPD, and bronchiectasis over a lag of 0–7 days. The shaded grey is the 95% CI, and the dashed lines show the optimal temperatures of 15.20 °C, 15.50 °C, 19.60 °C, and 15.60 °C. Respiratory indicates respiratory disease; COPD means chronic obstructive pulmonary disease