Every point in a steadily flowing fluid, regardless of the fluid speed at that point, has its own static pressure P {\displaystyle P} , dynamic pressure q {\displaystyle q} , and total pressure P 0 {\displaystyle P_{0}} . Static pressure and dynamic pressure are likely to vary significantly throughout the fluid but total pressure is constant along each streamline. In irrotational flow, total pressure is the same on all streamlines and is therefore constant throughout the flow.[11]