The given equation represents a magnetic field strength H̅(r,θ,φ) in the spherical coordinate system, in free space. Here, r̂ and θ̂ represent the unit vectors along r and θ, respectively. The value of P in the equation H̅(r,θ,φ)=(1/r³)(r̂P cos θ+θ̂ sin θ) should be _______. (rounded off to the nearest integer)