Fig. 6. Histograms of the deviation of solar elevation angles estimated in “fists” from real solar elevations under weather situations A 2, B 3, and C 4. A dashed line marks the deviation of 0°, and positive deviations mark overestimations of the solar elevation angle. The number of individual estimations N and the mean deviation ΔΘS with 95% confidence limits are given in the lower half of the dials.
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