STAR-CCM+ can dynamically monitor virtually any quantity while the solution develops. The process involves setting up a report which defines the quantity of interest and the region parts that will be monitored. A monitor is then defined based on the report, which controls the update frequency and normalization characteristics. Finally, a graph plot can then be created from the monitor.
A report will be used in this case to monitor the irradiation at one of the interfaces between the glass panels and surrounding air. This process starts with the report definition.
This will create a new node called Area Averaged 1 within the Reports node.
The reason for selecting the Fluid:bottom-solid1 [In-place 2] boundary instead of the Fluid:bottom-solid1 boundary is that after initialization, the in-place interface conditions will supersede those of the original wall boundary. Therefore, any values you wish to extract from boundaries on region interfaces should always be from the in-place boundary interfaces.
The setup for the report is now complete, and a monitor and plot can be made from that report.
This will create a new node called Irradiation1 Monitor within the Monitors node.

With the new node selected, the default settings for the Irradiation1 Monitor can be seen in the Properties window.

These settings will be used to update the plot at every iteration while the solution is running.
The monitor plot can now be defined.
This will create the Irradiation1 Monitor Plot node under the Plots node.

With that new node selected, you can view the property settings for the plot in the Properties window.

Additional settings for the monitor plot can be adjusted via the subnodes of the Irradiation1 Monitor Plot node.
A new plot display called Irradiation1 Monitor Plot will appear in the Graphics window.

This display will be automatically updated with boundary irradiation data when the run starts.
Two new monitors are created and one new plot called Reports Plot appears in the Plots node.
Note that for reports and scalar scenes, no radiation data, i.e. irradiation and radiosity, is available on the solid side of a fluid-solid interface. This means that no data is available for reporting, monitoring, plotting or visualizing on Solid:top-solid1[In-place1], Solid:bottom-solid1[In-place2], Solid:top-solid2[In-place3] or Solid:bottom-solid2[In-place4].
This completes the pre-processing setup for the case.