     Specifies the forecast time step from forecast base time.</span>
<span class="sd">        Valid values are hours (HH) from forecast base time.</span>

<span class="sd">    maxstep : int</span>
<span class="sd">        The maximum forecast time step in hours from the forecast base time.</span>
<span class="sd">        This is the maximum step for non-flux (not accumulated) forecast data.</span>

<span class="sd">    purefc : int</span>
<span class="sd">        Switch for definition of pure forecast mode