Natural Daylight Illumination in Northeastern United States

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  • 1 Environmental Data Service, ESSA, Silver Spring, Md.
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Abstract

Natural illumination intensity at five cities in northeastern United States is presented for each hour of the day. In addition, the mean relative optical air mass of opaque and thin overcast cloud cover is given for each observation site.

Abstract

Natural illumination intensity at five cities in northeastern United States is presented for each hour of the day. In addition, the mean relative optical air mass of opaque and thin overcast cloud cover is given for each observation site.

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