All Figures

Figure 1: Measurements of the scintillation bandwidth and scintillation time scale plotted against observing date. Results are scaled to f0=330 MHz ( left vertical scale) and f0=1 GHz ( right scale) for purposes of comparison. The horizontal lines indicate the effective bandwidth used for measurements of  . Symbols show reference: squares: Nicastro & Johnston (1995); circles: Johnston et al. (1998); triangle: Issur (2000); stars Paper I (4-pointed: broad scintillation, 5-pointed: narrow); cross Gothoskar & Gupta (2000).

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In the text

Figure 2: The time structure function of phase fluctuations for PSR J0437-4715 reduced to the reference frequency f0 = 1000 MHz, as compiled from the observations. Open symbols are as in Fig. 1. The solid triangle indicates scintillation of the quasar PKS 0405-385 Rickett et al. (2002). The dashed line indicates the best fit to data for the pulsar (index   0.20); the solid line corresponds to the best-fitting power-law to all points (index   0.15). Top x-axis corresponds to spatial scale of the inhomogeneities.

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In the text

	Figure 3: The frequency structure function of phase fluctuations, reduced to the reference frequency f0 = 1000 MHz, as compiled from the observations, using the same symbols as in Fig. 1. The upper panel shows the diffractive model, and the lower panel the refractive model. Solid line correspond to the fit to the data taken at f=327 MHz.
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In the text