Fraction of sky covered 1.0 20.9 20.8 20.7 206 Time of day Midn 3AM 6AM 9AM Noon 3PM 6PM 9PM 0.45 0.48 0.47 0.45 0.41 0.39 0.41 0.38 0.48 0.52 0.49 0.57 0.55 0.53 0.46 0.46 0.50 0.55 0.52 0.62 0.60 0.57 0.49 0.43 0.52 0.56 0.54 0.64 0.63 0.59 0.52 0.47 0.59 0.57 0.66 0.65 0.61 0.54 0.49 0.54 0.64 0.55 0.51 0.66 0.58 0.56 0.71 0.60 0.60 0.60 0.74 0.71 0.62 0.62 0.89 0.86 0.84 0.79 0.66 20.5 0.55 0.59 0.59 0.69 0.67 20.4 0.56 0.59 0.62 0.72 0.68 0.58 0.62 0.64 0.74 0.60 0.67 0.66 0.78 20.3 202 20.1 0.66 0.71 0.72 (a) What percentage of time is at least 0.1 x% 10 of the sky covered by clouds at noon