12⁢π⁢∫02⁢πⅇ2⁢ⅈ⁢h⁢w⁢cen⁡(t,h2)⁢ⅆ⁡t=ⅈn⁢cen⁡(α,h2)⁢Mcn(1)⁡(z,h),