- Author: World Meteorological Organization
- Language: English
- Year: 1970
- Author: H. T. Dougherty and M. E. Johnson
- Language: English
- Year: 1964
Tables of median hourly values of the cosine of the solar zenith angle (x) for thirty-five locations
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- Language: English
- Year: 1959
- Author: Stephen A. Leake Roger D. Kilmer
- Language: English
- Year: 1988
- Author: Patricia Ames, Vanessa Rojas, Tamia Portugal
- Language: English
- Year: 2009
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- Year: 1952
- Author: Kuhn Paul, Peterson James P., Levin L. Ross
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- Language: English
- Year: 1948