Table 24.
Average Summary Weather Statistics for First and Second Visits at Six Terminals
| Philadelphia | Columbus | Milwaukee | Phoenix | Portland | Denver | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| First | Second | First | Second | First | Second | First | Second | First | Second | First | Second | |
| Relative humidity (%) |
39.1 | 41.9 | 70.4a | 54.1 | 78.8a | 57.7 | 13.3a | 16.1 | 57.1 | 53.5 | 51.4 | 49.3 |
| Temperature (°C) |
3.7a | 11.2 | 2.3a | 11.7 | 9.4a | 15.8 | 34.0a | 36.0 | 23.2a | 20.6 | 19.9a | 22.4 |
| Wind speed (kph) |
12.9a | 9.8 | 11.4 | 12.1 | 20.9a | 14.8 | 11.7 | 11.4 | 11.4a | 13.4 | 11.3a | 16.3 |
a
Differences are statistically significant at P < 0.05 level using the Wilcoxon rank sum test.
Note: Proximity to an interstate and industrial activity did not change.