span>&#160;Level Floor</div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;\begin{equation}</div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;   [L]=\sage{Level_floor}</div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;\end{equation}</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;</div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;Modal Part