id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-317138-6nonzjbq	Takagi, Hisato	The higher temperature and ultraviolet, the lower COVID-19 prevalence – Meta-regression of data from large U.S. cities	2020-06-20		.txt	text/plain	593	38	50	title: The higher temperature and ultraviolet, the lower COVID-19 prevalence – Meta-regression of data from large U.S. cities We obtained 1) integrated number of confirmed COVID-19 cases in the county (to which the city belongs) on 14 May 2020 from Johns Hopkins Coronavirus Resource Center (https://coronavirus.jhu.edu), 2) estimated population in 2019 in the county from U.S. Census Bureau, and 3) monthly meteorological conditions at the city for 4 months (from January to April 2020) from National Weather Service (https://www.weather.gov), World Weather Online (https://www.worldweatheronline.com), and Global Solar Atlas (https://globalsolaratlas.info/map) ( Table 1) . Results of the meta-regression were summarized in Table 2 The present meta-regression suggests that temperature, UV index, sun hours, and solar DNI may be negatively, and wind speed and sky cover may be positively associated with COVID-19 prevalence.	./cache/cord-317138-6nonzjbq.txt	./txt/cord-317138-6nonzjbq.txt