Timing results of PSR J2205+6012. Top panel: waveform of the DM variations from the maximum likelihood results of the TempoNest analysis. Middle panel: timing residuals after subtraction of the ML DM variations waveform. Bottom panel: same as middle panel but with the averaged timing residuals from the NRT subbanded data. Grey points and blue triangles represent the NRT L-band and Effelsberg S-band data, respectively.