In this second phase I've studied how the solar radiation changes through the year and where the sun lightning is more intense in relation with days and seasons.
I've seen that in summer from 10:00 to 16:00 the sun in high in the sky so the radiation is more intense on roofs while northen faces are overshadowed.
In winter the situation is different: in the same hours of the last example we can see that sun reaches a lower profile and roofs can't achieve the maximum solar radiation. Even some of the southern faces are shadowed by buildings on the other side of the road.