Fig. 5

Correspondence analysis biplot for Lisbon (LMA) and Porto (PMA) metropolitan areas, respectively, 2011–2020 of Cardiorespiratory mortality (CARDIO) quartile categories and quartile categories for: (a)-(b) Temperature; (c)-(d) Relative humidity; (e)-(f) Wind speed; (g)-(h) PM₁₀; (i)-(j) NO₂; (k)-(l) O₃; (m) PM_2.5; and (n) CO.