<p>Using EathSense Zephyrs, the concentrations of NO<sub>2</sub>, O<sub>3</sub> and PM<sub>2.5</sub> was measured on morning commutes across 4 routes in Leicester.</p>
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<p>Using the concentrations of each pollutant measured on the routes, average journey times and previous measurements of commuter inhalation rates, the inhaled dose of each pollutant was estimated on each route. </p>