Before revision: In the fluid flow field around a body there will be points having positive pressure coefficients up to one, and negative pressure coefficients including coefficients less than minus one , but nowhere will the coefficient exceed plus one because the highest pressure that can be achieved is the stagnation pressure .
After revision: In an incompressible fluid flow field around a body there will be points having positive pressure coefficients up to one, and negative pressure coefficients including coefficients less than minus one , .