Our index indicates that the failure of monitor 29154 in the
Hamilton network would result in the greatest compromise to the
network, which is likely due to it being the most northerly monitor.
It is the only monitor well aligned to capture air pollution that is
emitted from the industrial sector when the wind is blowing from
the south. Southwest is Hamilton's prevailing wind direction (Arain
et al., 2009). If monitoring cannot be appropriately conducted
during the southwest winds, high pollution episodes in the region
may go unmonitored, which affect households located on the land
bridge presented in Fig. 1. These households already experience
elevated air pollution concentrations due to their proximity to a
major freeway, which is a gateway between the Greater Toronto
Area and New York State in the United States of America (Adams
et al., 2012