Which preposition to use with cloudiness

over Occurrences 4%

LANDSBERG, HELMUT E. A climatic study of cloudiness over Japan; a publication of the Institute of Meteorology of the University of Chicago, by H. Landsberg.

of Occurrences 3%

Through more or less cloudiness of expression, he gives us many striking and satisfactory views, looking towards a complete synthesis of the glorious system of things to which we belong, makes out the universe as habitable and cheerful as it is wide, and leaves us admiring its good more than marvelling at its evil.

Which preposition to use with  cloudiness