README DATA-SPECIFIC INFORMATION FOR: Rail_Infection_Covariates.csv 1. Number of Variables: 12 2. Number of Cases: 12 3. Variable List: Species: black rail = BLRA, Virginia rail = VIRA Year: year when captured and sampled N: number of rails captured Positive: number of rails that tested positive for West Nile Virus antibodies Negative: number of rails that tested negative for West Nile Virus antibodies PropPos: proportion of tested rails that were positive WNVcur.raw: West Nile Virus vector index for the capture year Precip: total precipitation (mm) based on water years (1 Oct. previous year to 30 Sept. of year) from Browns Valley California Irrigation Management Information System (CIMIS) station at the Sierra Foothills Research and Extension Center, Yuba County, CA. Freeze_days: number of days below freezing during water years at Browns Valley California Irrigation Management Information System (CIMIS) station at the Sierra Foothills Research and Extension Center, Yuba County, CA. WNVcur.std: WNVcur.raw centered and standardized Precip.std: Precip centered and standardized Freezedays.std: Freeze_days centered and standardized 4. Missing data codes: None