highly significantp < 1 × 10 − 300
As expected, there were highly significant correlations (all p < 1 × 10 − 300 ) between air pollution markers and the Townsend index ( NO 2 : 0.496; NO x : 0.436; PM 10 : 0.219; PM 2.5 : 0.448; PM 2.5 absorbance : 0.406; and PM coarse : 0.111).