Coverage

Cov_f

Coverage for each frequency: Sum up the sensitivitities of all m-Values for each frequency:

Cov^{Im}_f(f) = \sum_{i} \left(
\frac{\partial[-Im(\hat{\rho}(\omega))]}{\partial m_i} \right)

Cov_m

Coverage for each m value: Sum up the sensitivities of all frequencies for each m-value:

Cov^{Im}_m(m_k) = \sum_{j} \left( \frac{[\partial
-Im(\hat{\rho}(\omega_j))]}{\partial m_k} \right)