Figure 4
From: Time and spatially resolved tracking of the air quality in local public transport
Contour plots of the carbon dioxide concentrations measured with gas sensors in buses. (A) BSVG Circle Line 419 (Run 09); (B) BSVG Tram Line 10 (Run 06, north to south); (C) BSVG Tram Line 10 (Run 05, south to north). The arrows indicate the direction of travel. The figure was generated with Microsoft Excel 2019 (v1808) using Microsoft Bing Maps and graphically modified with Microsoft PowerPoint 2019 (v1808).
