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<locationFunctionEquals selected=@LOC_ID@ additional="@LOC_ID@">
In the example below locationFunctionEquals selected="@LOC_ID@" additional="@AFGB_NAAR@"/> is used which will show all a timeseries from the additional time series set where the location has an attribute value AFGB_NAAR which equals the LOC_ID attribute of the shown location of the normal time series set, which can be multiple or even 0.
There is an extra option to show the additional time series in a separate sub plot to make sure there are no plots with incompatible parameter combinations.
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