In the daily analysis, 1200 UTC dew point temperature was significantly lower for events than for non-events (p = 0.003), a result that is consistent with the hypothesis that drier conditions are related to enhanced P&I mortality. However, 1900 UTC dew point was higher during events (p = 0.036), a result that contradicts the underlying hypothesis. Table 3 . Results of t-tests comparing weather variables between mortality event days to non-event days. When this test was repeated without smoothing the weather variables, only 1200 UTC dew point was significant (p = 0.028; Table 3 ). The lack of a relationship for 1900 UTC dew point (p = 0.181) suggests that the finding of high afternoon dew points during mortality events using smoothed weather data was not robust.