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Table 3 Correlation coefficients of PGEs in traffic junctions and industrial areas

From: Anthropogenic platinum group element (Pt, Pd, Rh) concentrations in PM₁₀ and PM_2.5 from Kolkata, India

	Traffic				Industrial
	PM₁₀		PM_2.5		PM₁₀		PM_2.5
	Winter	Monsoon	Winter	Monsoon	Winter	Monsoon	Winter	Monsoon
Pt/Pd	0.79	0.82	0.77	0.63	0.04	0.38	0.06	0.35
Pt/Rh	0.64	0.93	0.89	0.81	0.50	0.19	0.19	0.30
Pd/Rh	0.62	0.80	0.89	0.74	0.14	0.50	0.24	0.29

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