438727.fig.003a
(a)
438727.fig.003b
(b)
438727.fig.003c
(c)
438727.fig.003d
(d)
438727.fig.003e
(e)
438727.fig.003f
(f)
Figure 3: Spectral reliable regions: (a) PNF measurement; (b) CNF measurement; (c) SNF measurement with polar truncation; (d) SNF measurement with spherical ring truncation; (e) SNF measurement with azimuthal truncation; (f) SNF measurement with sectorial truncation.