$\begin{figure} \par\includegraphics[width=8.3cm,clip]{9806fig1.eps}\end{figure}$ Figure 1: Upper panel: flux density curve of the LPQ source 3C 273 (1226+026) at 37 GHz. Flares used in our analysis are marked with arrows. Lower panel: flux density curve at 4.8 GHz.
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In the text

$\begin{figure} \par\includegraphics[width=15.5cm,clip]{9806fig2.eps}\end{figure}$ Figure 2: Distribution of variability indices in different source classes and frequency bands. Median values for each source class are shown by vertical lines.
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In the text

$\begin{figure} \par\includegraphics[width=8cm,clip]{9806fig4.eps}\end{figure}$ Figure 4: Corrected peak luminosity at 37 GHz against the duration of the flare corrected for redshift and Doppler boosting.
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In the text

$\begin{figure} \par\includegraphics[width=8.3cm,clip]{9806fig5.eps}\end{figure}$ Figure 5: Peak time rank number plotted against the frequency. The frequency band having the flare peak first has been ranked 1.
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In the text

$\begin{figure} \par\includegraphics[width=8.3cm,clip]{9806fig6.eps}\end{figure}$ Figure 6: Relative flux density rank number plotted against the frequency. Frequency with highest relative flux density has been ranked 1.
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In the text

$\begin{figure} \par\includegraphics[width=7.5cm,clip]{9806fig7.eps}\end{figure}$ Figure 7: Observed maximum relative flux density scaled to the frequency at which the maximum occurs. The two straight lines give best fits to the section below and above the peak frequency.
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In the text

$\begin{figure} \par\includegraphics[width=8.2cm,clip]{9806fig8.eps}\end{figure}$ Figure 8: Time delay between the observing frequency and peak frequency against the normalised frequency.
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In the text

$\begin{figure} \par\includegraphics[width=8.4cm,clip]{9806fig9.eps}\end{figure}$ Figure 9: a) Flux density curve of the BLO source 0235+164 at 37 GHz with each flare analysed marked with arrows. b) Flare number 3 in more detail. c) Spectra of every epoch marked in b).
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In the text

$\begin{figure} \par\includegraphics[width=8.3cm,clip]{9806fig1.eps}\end{figure}$	Figure 1: Upper panel: flux density curve of the LPQ source 3C 273 (1226+026) at 37 GHz. Flares used in our analysis are marked with arrows. Lower panel: flux density curve at 4.8 GHz.
Open with DEXTER

$\begin{figure} \par\includegraphics[width=15.5cm,clip]{9806fig2.eps}\end{figure}$	Figure 2: Distribution of variability indices in different source classes and frequency bands. Median values for each source class are shown by vertical lines.
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$\begin{figure} \par\includegraphics[width=8.2cm,clip]{9806fig3.eps}\end{figure}$	Figure 3: Observed peak flux density against the duration of the flare at 37 GHz.
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$\begin{figure} \par\includegraphics[width=8cm,clip]{9806fig4.eps}\end{figure}$	Figure 4: Corrected peak luminosity at 37 GHz against the duration of the flare corrected for redshift and Doppler boosting.
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$\begin{figure} \par\includegraphics[width=8.3cm,clip]{9806fig5.eps}\end{figure}$	Figure 5: Peak time rank number plotted against the frequency. The frequency band having the flare peak first has been ranked 1.
Open with DEXTER

$\begin{figure} \par\includegraphics[width=8.3cm,clip]{9806fig6.eps}\end{figure}$	Figure 6: Relative flux density rank number plotted against the frequency. Frequency with highest relative flux density has been ranked 1.
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$\begin{figure} \par\includegraphics[width=7.5cm,clip]{9806fig7.eps}\end{figure}$	Figure 7: Observed maximum relative flux density scaled to the frequency at which the maximum occurs. The two straight lines give best fits to the section below and above the peak frequency.
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$\begin{figure} \par\includegraphics[width=8.2cm,clip]{9806fig8.eps}\end{figure}$	Figure 8: Time delay between the observing frequency and peak frequency against the normalised frequency.
Open with DEXTER

$\begin{figure} \par\includegraphics[width=8.4cm,clip]{9806fig9.eps}\end{figure}$	Figure 9: a) Flux density curve of the BLO source 0235+164 at 37 GHz with each flare analysed marked with arrows. b) Flare number 3 in more detail. c) Spectra of every epoch marked in b).
Open with DEXTER