Development of the normalised computational time as a function of the number of degrees of freedom. Both variables are depicted in logarithmic scale. The black dots mark the results for increasing the number of radius grid points from 40 to 500, while the number of angles is kept constant at 10. The red crosses indicate the results for increasing the angular resolution from 10 to 82, using a constant radial grid point number of 40. The corresponding solid lines depict the linear fits through the respective data points. For the angular nodes, two different fits are used.
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