A study of zenith luminance on Madrid cl
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A Soler; K.K Gopinathan
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Article
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2000
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Elsevier Science
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English
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The zenith luminance (L ) has been measured for cloudless skies at the IDMP station in Madrid. z Mean values obtained at every 15 min have been fitted vs. solar elevation (a). A 5th degree polynomial connecting log (L ) against (a) gives the best correlation in terms of the correlation coefficient (