2π⁢∫0π𝒞2⁢ℓ+1(j)⁡(2⁢h⁢R)⁢cos⁡((2⁢ℓ+1)⁢ϕ)⁢ce2⁢m+1⁡(t,h2)⁢ⅆ⁡t=(-1)ℓ+m⁢A2⁢ℓ+12⁢m+1⁡(h2)⁢Mc2⁢m+1(j)⁡(z,h),