Precipitation and temperature usually have effects on mosquito populations in life stage transitions and in oviposit rates [31, 32]. Mosquitoes lay their eggs in water, and those eggs hatch in water, making the accumulated precipitation a factor in the oviposition rate of the mosquito population. Also, for a mosquito to develop, it must spend a certain amount of time above a temperature threshold. The level and the time above this threshold are combined in the definition of degree days. [3335] Due to these environmental factors, we collected weather data from sites that ranged across 7 zip codes in the Knox County area. In order to find the average site’s degree day data, we first import the hourly temperature information for the sites via the website Weather Underground [36]. Weather Underground [36] uses the temperatures from the closest airport weather station to a location for its historical weather records. The two airports we took data from were McGhee Tyson and Oak Ridge airport station. As two of the sites were in the zip code for the Oak Ridge airport station, and six were in the zip code for the McGhee Tyson airport station, we took an average of the data between the the two airports. The temperature information is manually imported per hour per day from 15 May 2013 to 19 October 2013. The temperature for the average site is then averaged between the Oak Ridge site and the McGhee Tyson site per hour. Using mosquito development results from [3739] involving temperatures and several types of mosquitoes, we chose 15° C as the minimal development temperature for the threshold in degree days. The threshold is subtracted from the hourly temperature, and if that difference is positive, the difference contributes to the degree hours/day [40]. If the difference is negative, there is no contribution from that difference. For each hour of the day, we sum the differences for the hourly temperature above the temperature threshold,

The precipitation data is gathered in a similar way. We use Weather Underground [36] to obtain the hourly precipitation data in centimeters for both of the referenced airport weather stations. The precipitation is averaged between the sites as described earlier and accumulated hourly to obtain the daily precipitation data that is used in the model.

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