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. 2016 Jun 10;2(6):e1600377. doi: 10.1126/sciadv.1600377

Fig. 19. Comparisons between sky brightness NPS CCD observations and atlas predictions.

Fig. 19

(Left) Plots comparing CCD observations to the predictions of the atlas (upper graph, aerosol clarity K = 1; lower graph, K = 0.5). (Right) Fit residuals (observed minus predicted values) for the SQM-based calibration versus CCD NPS observations (upper histogram, K = 1; lower histogram, K = 0.5).