Investigation on the Impacts of COVID-19 Lockdown and Influencing Factors on Air Quality in Greater Bangkok, Thailand

Figure 5

Loading factors of 14 companies in 5 principal components and their estimated comprehensive eigenvalues. The colored bar represents the level of loading value and numeric shows the component loadings between each meteorological factor and a principal component. (a) Before Lockdown 2019. (b) Lockdown 2019. (c) After Lockdown 2019. (d) Before Lockdown 2020. (e) Lockdown 2020. (f) After Lockdown 2020.

(a)

(b)

(c)

(d)

(e)

(f)