Mirror mode identification. From top to bottom: magnetic field strength (black) and low-pass filtered background (blue); Electron density (black) and low-pass filtered background (blue); ΔB/B; ΔN/N; Angle between background magnetic field and minimum variance (red) and maximum variance (blue) direction; Eigenvalues ratios. Based on magnetic field-only categorisation the vertical blue bars are determined to be MMs. Including the electron density in the categorisation the MM identification is falsified as ΔB/B and ΔN/N are in phase.