The purpose of this paper is to validate Kittler-Perez model of classification of sky luminance distribution about the IDMP data in Kyoto Japan. Data were classified by the nearest centroid sorting method on the combination of nine indices of insolation condition. The indices are, 1) cloud ratio, 2) sky clearness index, 3) ratio of zenith luminance to diffuse illuminance, 4) standardized diffuse illuminance, 5) brightness, 6) standardized global illuminance, 7) standardized direct illuminance, 8) permeability, and 9) turbidity.
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