Fig. 4From: In-flight scalar calibration and characterisation of the Swarm magnetometry packageEigenvalues of \(\underline{\underline{\mathbf {G}}}^T \underline{\underline{\mathbf {G}}} + \lambda \underline{\underline{\mathbf {R}}}\) matrix (blue, left axis), sorted decreasingly. In green (right axis), the decrease per eigenvalue is plottedBack to article page