Evolution has lots of numbers. Numbers of base pairs. Numbers of species. Numbers of years. Numbers of generations.
But like the science of weather observation (not prediction, just observation), no one number really tells it. You can measure the humidity, but that's just the humidity at one latitude/longitude/altitude. You can measure wind speed, but the same problem applies.
Evolution and weather can have numbers applied to their measurement, but they are both too chaotic to be described with numbers alone.
So there is a Theory of Weather?