Table 3.
Maximum recorded 1-hour benzene concentration (2013–2015).
| Test | Pairwise Correlation | DF | Spearman’s Rho | P-Value |
|---|---|---|---|---|
| 1 | (A) Maximum 1-hour Benzene (B) Petrochemical industry benzene emissions |
116 | 0.38 | < 0.01 |
| 2 | (A) Maximum 1-hour Benzene (B) Road-transport: Bus NMVOC emissions |
116 | 0.24 | < 0.01 |
| 3 | (A) Maximum 1-hour Benzene (B) Road-transport: HGV NMVOC emissions |
116 | 0.16 | 0.04 |
| 4 | (A) Maximum 1-hour Benzene (B) Road-transport: Petrol Car NMVOC emissions |
116 | 0.05 | 0.31 |
| 5 | (A) Maximum 1-hour Benzene (B) Road-transport: Diesel Car NMVOC emissions |
116 | 0.17 | 0.03 |