>, all interval will be used. Default: <code>NULL</code>.</p></li>
<li><p><code>simulation_days</code>: An integer vector to specify which simulation day data
to extract. Note that this number resets after warmup and at the beginning
of an environment period. All possible <code>simulation_days</code> can be obtained
using <code>$read_table("Time")</code>. If <code>NULL</code>, all simulation days will be used.
Default: <code>NULL</code>.</p></li>
<li><p><code>day_type</code>: A character vector to specify w