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Before seeing the macro code to generate the plot we inspect the file itself we want to plot. Double-click on the 'flux_s001.grib' GRIB icon' in folder 'result_fw_conc' to start up the Grib Examiner. We can see that this our GRIB file contains various flux fields. We can find out further details about the parameters by setting the Dump mode to Namespace and Namespace to Parameter:
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