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!

This one is answered by @Mostapha over at the LB|HB forum.