Transfer Function Models with Time-Varying Coefficients

<table class="table-group" width="800px"><tr class="fig-image" id="a"><td><img alt="451076.fig.0013a" src="https://static.hindawi.com/articles/jps/volume-2012/451076/figures/451076.fig.0013a.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(a) </b>Days since 00:00 on 6th April 1995</td></tr></table></td></tr><tr class="fig-image" id="b"><td><img alt="451076.fig.0013b" src="https://static.hindawi.com/articles/jps/volume-2012/451076/figures/451076.fig.0013b.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(b) </b>Days since 00:00 on 6th April 1995</td></tr></table></td></tr></table>

<table>Hourly wind speeds from 00:00 on 6th April 1995: (a) Aberporth (b) Valley.</table>

Journal of Probability and Statistics

fig13

Figure 13

Figure 13: Transfer Function Models with Time-Varying Coefficients 