Mean energy densities as a function of radius in IC 342. Red circles: thermal energy of the ionized gas; blue squares: turbulent kinetic energy of the neutral gas; black upwards triangles: magnetic energy of the total field; green downwards triangles: magnetic energy of the ordered field. The error bars include only noise errors in the maps from which the energy densities are derived. No systematic errors are included, e.g. those due to a radial variation of thermal gas temperature, of the filling factor or of the turbulent gas velocity, nor errors due to deviations from the equipartition assumption.