Figure 1 – uploaded by JOHN UGBEBOR

Figure 1: Comprehensive Map of Port Harcourt city, showing major junctions. (Source: Nairaland. 2017)

Table 4: Average ambient air quality parameters at (Ibadan Street) Control Junction

Figure 3: Wind Rose showing Wind Directions monitored at the Junctions

Figure 5: Mean concentration of NOz at sample stations

Figure 7: Mean concentration of H2S at sample stations

Figure 8: Mean concentrations of Hydrocarbon at sample stations

Figure 9: Mean concentration of TSPM at Sample Stations

Figure 6: Mean Concentration of CO at sample stations

Figure 10: Mean concentration of PM1o at Sample Station

Figure 11: Mean Concentration of PMz5 at sample stations