s seasons.</p></li>
</ul></dd>


<dt>decay_factor</dt>
<dd><p>A numeric value between 0 and 1, that specifies the weight applied to previous seasons in level
calculations. It is used as <code>decay_factor</code>^(number of seasons back), whereby the weight for the most recent season
will be <code>decay_factor</code>^0 = 1. This parameter allows for a decreasing weight assigned to prior seasons, such that
the influence of older seasons diminishes exponentially.</p></dd>


<dt>disease_threshold</dt>
<dd><p>A 