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Id

Values

002146

Source conditions for Dobson instruments Code/Flag Figure Description Status 0 On direct sun 1 On direct moon 2 On blue zenith sky 3 On zenith cloud (uniform stratified layer of small opacity) 4 On zenith cloud (uniform or moderately variable layer of medium opacity) 5 On zenith cloud (uniform or moderately variable layer of large opacity) 6 On zenith cloud (highly variable opacity, with or without precipitation) 7 On zenith cloud (fog) 8 On zenith haze 9 On direct sun through thin cloud, fog or haze 15 Missing value

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