 μs along <cite>t2</cite>, you use:</p>
<div class="doctest highlight-default notranslate"><div class="highlight"><pre><span></span><span class="gp">&gt;&gt;&gt; </span><span class="n">d</span><span class="p">[</span><span class="s1">&#39;t2&#39;</span><span class="p">:(</span><span class="mi">0</span><span class="p">,</span><span class="mf">100e-6</span><span class="p">)]</span>
</pre></div>
</div>
<p>Either value in parentheses can be <cite>None</cite>, in which case, all values to the end of the axis wi