Goodness of fit of the model that is best supported by the data (model

<p><b>). </b><b>A</b>: Correlation between the 20 (4 variants×5 dates) observed mean frequencies of the four PVY variants and their estimated mean values. <b>B</b>: Correlation between the 20 observed standard deviations of the frequencies of the four PVY variants and their estimated standard deviations. The full line is the first diagonal (<i>i.e.</i> line <i>y</i> = <i>x</i>).