= {<span class="string">'ft/s'</span>, <span class="string">'rad'</span>, <span class="string">'rad'</span>,<span class="keyword">...</span>
    <span class="string">'rad'</span>,<span class="string">'rad'</span>,<span class="string">'rad'</span>,<span class="keyword">...</span>
    <span class="string">'rad'</span>,<span class="string">'rad'</span>,<span class="string">'rad'</span>,<span class="keyword">...</span>
    <span class="string">'ft'</span>, <span class="string">'ft'</span>, <span class="string">