Figure 10

Error reliability. Rms value (squares) or 99.99 percentile (triangles) of the error $\delta a/a$ (top) or $\delta a/f$ (bottom) versus parameter ϵ for the same runs as in Figure 9 (using the same colour coding). Full symbols indicate that the expansion order is optimal, i.e. obtained minimal wall-clock time for the given error measure (lowest line in Figure 9).