Satellite Observations of NO₂ Trend over Romania

Table 3

Correlation coefficients (top) between OMI and in situ measurements of the NO₂ observations and their significance (bottom) for three locations: rural, industrial, and traffic.

Correlation coefficients between OMI and in situ measurements
Balotesti 8 UTC-OMI; 𝑅=0.6422; 𝑃=0.0001	Balotesti 10 UTC-OMI; 𝑅=0.6171; 𝑃=0.0001	Balotesti 12 UTC-OMI; 𝑅=0.6512; 𝑃=0.0001
Berceni 8 UTC-OMI; 𝑅=0.5641; 𝑃=0.0001	Berceni 10 UTC-OMI; 𝑅=0.7257; 𝑃=0.0001	Berceni 12 UTC-OMI; 𝑅=0.7644; 𝑃=0.0001
Cercul 8 UTC-OMI; 𝑅=0.0342; 𝑃=0.8173	Cercul 10 UTC-OMI; 𝑅=0.0797; 𝑃=0.5900	Cercul 12 UTC-OMI; 𝑅=0.1581; 𝑃=0.2833