...
The display of threshold lines are supported for one y axis. But there can be threshold lines for either the left or the right y axis, but not both. Note that further constraints on what thresholds are displayed is possible in the reports schema.
Plot background and foreground images
The images configured in <plotBackgroundReportImage> and <plotForegroundReportImage> should be included in the config folder ReportImageFiles. The images are resized to fill the whole plot. The foreground image should be transparent. Below an example of the plot with the background image.
Multiple TimeSeries plots
...