Area calculation - direct sunlight area

In the Ladybug “sun light hours analysis", I have simulated how many hours direct sun lights radiate to the building.

I am wondering if there is any way to calculate each areas (m2) for each color code.

For example, is there any way that I can calculate the areas (m2) in blue color? That blue area gets sun lights for less than 1.5 hours.

Please help.

Thanks in advance!

You can by using dispatch and filtering mesh faces based on the outputs of the study.

See this example:

Thank you very much, Mostapha!