(i) There must be sufficient moisture in the air.
(ii) There must be clear sky to permit free terrestrial radiation
(iii) The wind must be light
(iv) The air must be cooled below dew point.
maurice.mutuku answered the question on May 27, 2017 at 11:30
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May 27, 2017
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May 27, 2017
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May 27, 2017
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May 27, 2017
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