Air Quality and Human Health Risk Assessment in the Residential Areas at the Proximity of the Nkolfoulou Landfill in Yaoundé Metropolis, Cameroon

Table 7

Correlation matrix.

	PM2.5	PM10	CH4	H2S	CH2O	CO2	SO2	CO	O3
PM2.5	1
PM10	0.564	1
CH4	−0.320	0.042	1
H2S	−0.309	−0.139	0.927	1
CH2O	−0.212	−0.091	0.709	0.818	1
CO2	0.420	0.685	0.018	−0.127	0.188	1
SO2	0.410	0.600	−0.030	0.018	0.382	0.576	1
CO	0.648	0.891	0.042	−0.067	0.127	0.697	0.697	1
O3	0.350	−0.043	−0.615	−0.572	−0.689	−0.332	−0.117	−0.049	1

Correlation is significant at the 0.05 level; Correlation is significant at the 0.01 level; bold values are statistically significant.