Figure 7: The coefficients of determination for each grid cell for the two
pollutants most accurately modeled; note the slightly different color ramp
values. Left: NO 2. Right: 03-
well as consistent across the city. The predictions are slightly more accurate
for upper Manhattan, with a cluster of relatively inaccurate models in the
downtown city center. The NO 2 models were also consistently accurate,
but exhibited the opposite spatial pattern; the downtown models are most
accurate, with the worse models spread across the upper tip of the island.
These patterns can be seen in Figure 7, which shows the R 2 value for each
grid cell for the two pollutants.
The spatial distribution of CO R 2 values is shown in Figure 8. The
distribution is similar to the 03 models, with the most accurate models in
the upper part of the island, but the gradient is much smoother; CO has the
cleanest north-south progression.
Figure 7: The coefficients of determination for each grid cell for the twopollutants most accurately modeled; note the slightly different color rampvalues. Left: NO 2. Right: 03-well as consistent across the city. The predictions are slightly more accuratefor upper Manhattan, with a cluster of relatively inaccurate models in thedowntown city center. The NO 2 models were also consistently accurate,but exhibited the opposite spatial pattern; the downtown models are mostaccurate, with the worse models spread across the upper tip of the island.These patterns can be seen in Figure 7, which shows the R 2 value for eachgrid cell for the two pollutants.The spatial distribution of CO R 2 values is shown in Figure 8. Thedistribution is similar to the 03 models, with the most accurate models inthe upper part of the island, but the gradient is much smoother; CO has thecleanest north-south progression.
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