Figure 2 | Scientific Reports

Figure 2

From: Pollution of the Niger Delta with total petroleum hydrocarbons, heavy metals and nutrients in relation to seasonal dynamics

Figure 2

Combined box-scatterplot of contamination factors (CF) of TPHs and HMs in the Niger Delta coastal systems. CF calculation is based on the Fisheries and Recreation Quality Criteria Standards given by Nigerian law. CFs > 6 indicates a very high contamination. The box shows 25% to 75% range of values including seasonal median (–). Whiskers indicate the range of values within 1.5 inter-quartile ranges. Plots = Imo river (a,d), Bonny estuary (b,e), Lagos lagoon (c,f).

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