Calculation a percentage of each speed (Wind Velocity) in specific area

Hi, Bf community,
I asking for the ability to convert the wind vectors calculated by butterfly into wind velocity ( calculated in m/s) to calculate the percentage prevailing wind velocity. for example, I want to calculate the percentage of (5 m/s ) wind velocity in the specific out door area. I want this calculation to be done inside grasshopper to be connected with genetic algorithm plugins.