Microclimate analisis on roof

Hello,

I am trying to simulate the mean radiant temperatures on the roof of a house in suburban San Antonio, Texas. The goal is to assess the benefits of changing the roof materials to white ones in therms of temperature reduction and energy consumption. I have been working with the attached definitions with the great help of a friend, but I am quite new to ladybug and honeybee.

I am not trusting the results I am getting. Can someone please help me just to check if I am doing something wrong?.

Thanks in advance.

Arturo