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Pr different in report and hourly data file


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Ok then that is likely the reason. The PR is basically a ratio between yield and incident irradiance.
These values are different at every hour. Now, you should remember that the ratio of averages is not the average of the ratios.

The correct way would be to sum the yield (E_Grid) and average the global incident irradiance (GlobInc) separately and then recalculate the PR based on the two resulting values.

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