Table 3 Summary of t-tests for dynamic precipitation minus evaporation in inches (P-E) variables.
From: Avian GIS models signal human risk for West Nile virus in Mississippi
P-E variable by season | Mean for zip codes with | T-test significance (P-value) | |
|---|---|---|---|
| Â | WNV bird occurrence | No WNV bird occurrence | Â |
Summer 2002 | -1.1492 | -1.2772 | .515 |
Fall 2002 | 4.3486 | 4.1149 | .224 |
Summer 2003 | 1.1303 | -0.8574 | .001 |
Fall 2003 | -1.182 | 0.0585 | .080 |