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<div class="title">egm2008_aoi_grid_package.h</div> </div>
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<a href="egm2008__aoi__grid__package_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> </div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// CLASSIFICATION: UNCLASSIFIED</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> </div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// //</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">// File name: egm2008_aoi_grid_package.h //</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">// //</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">// Description of this module: //</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// Utility software that interpolates EGM 2008 geoid //</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">// heights from one of NGA's reformatted geoid height grids. //</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">// //</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">// This interpolator uses Area of Interest (AOI) //</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment">// geoid height grids, not the worldwide geoid height grid. //</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment">// //</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment">// This interpolator does not load an Area of Interest (AOI) //</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment">// geoid height grid until a user first requests a geoid height. //</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment">// The interpolator then loads an AOI grid centered near the point of // </span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment">// interest, and it interpolates local geoid height from the AOI grid. //</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment">// This interpolator re-uses the AOI grid until a subsequent point of //</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment">// interest lies outside the AOI. The interpolator then loads a //</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment">// new AOI grid centered at the new horizontal location of interest. //</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment">// //</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment">// This interpolator gives exactly the same results as //</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment">// the companion egm2008_full_grid_package's interpolator. //</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment">// However, the AOI interpolator requires far less computer memory. //</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment">// //</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment">// Revision History: //</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment">// Date Name Description //</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment">// ----------- ------------ ----------------------------------------------//</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment">// 19 Nov 2010 RD Craig Release //</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment">// 11 Feb 2011 RD Craig Updates following code review //</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment">// 30 May 2013 RD Craig MSP 1.3: ER29758 //</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment">// Added second constructor to //</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment">// permit multiple geoid-height grids //</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment">// when assessing relative interpolation errors. //</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment">// //</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment"></span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="preprocessor">#ifndef EGM2008_AOI_GRID_PACKAGE_H</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="preprocessor"></span><span class="preprocessor">#define EGM2008_AOI_GRID_PACKAGE_H</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment">// This file declares a C++ class</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment">// that interpolates EGM 2008 geoid heights from a</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment">// reformatted version of NGA's worldwide geoid height grids.</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> </div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="preprocessor">#include "<a class="code" href="_dtcc_api_8h.html">DtccApi.h</a>"</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="preprocessor">#include "<a class="code" href="egm2008__geoid__grid_8h.html">egm2008_geoid_grid.h</a>"</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> </div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="keyword">namespace </span>MSP</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> {</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> </div>
<div class="line"><a name="l00052"></a><span class="lineno"><a class="code" href="class_m_s_p_1_1_egm2008_aoi_grid.html"> 52</a></span>  <span class="keyword">class </span><a class="code" href="_dtcc_api_8h.html#a5995458476ac88a055b3f40b0238f2ae">MSP_DTCC_API</a> <a class="code" href="class_m_s_p_1_1_egm2008_aoi_grid.html">Egm2008AoiGrid</a> : <span class="keyword">public</span> <a class="code" href="class_m_s_p_1_1_egm2008_geoid_grid.html">Egm2008GeoidGrid</a> {</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  </div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keyword">protected</span>:</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> </div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="comment">// _maxAoiColIndex: The AOI grid's maximum column index;</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="comment">// this is referenced to the worldwide grid.</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> </div>
<div class="line"><a name="l00059"></a><span class="lineno"><a class="code" href="class_m_s_p_1_1_egm2008_aoi_grid.html#a21c128d8e3715ecab0ea438ba08d866b"> 59</a></span>  <span class="keywordtype">int</span> <a class="code" href="class_m_s_p_1_1_egm2008_aoi_grid.html#a21c128d8e3715ecab0ea438ba08d866b">_maxAoiColIndex</a>;</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> </div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="comment">// _minAoiColIndex: The AOI grid's minimum column index;</span></div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="comment">// this is referenced to the worldwide grid.</span></div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> </div>
<div class="line"><a name="l00064"></a><span class="lineno"><a class="code" href="class_m_s_p_1_1_egm2008_aoi_grid.html#a8dcff9e0148c01bf07485506daaaeda4"> 64</a></span>  <span class="keywordtype">int</span> <a class="code" href="class_m_s_p_1_1_egm2008_aoi_grid.html#a8dcff9e0148c01bf07485506daaaeda4">_minAoiColIndex</a>;</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> </div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="comment">// _maxAoiRowIndex: The AOI grid's maximum row index;</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="comment">// this is referenced to the worldwide grid.</span></div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> </div>
<div class="line"><a name="l00069"></a><span class="lineno"><a class="code" href="class_m_s_p_1_1_egm2008_aoi_grid.html#ad5b89027dcb469390cab78a8d887061f"> 69</a></span>  <span class="keywordtype">int</span> <a class="code" href="class_m_s_p_1_1_egm2008_aoi_grid.html#ad5b89027dcb469390cab78a8d887061f">_maxAoiRowIndex</a>;</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> </div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="comment">// _minAoiRowIndex: The AOI grid's minimum row index;</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="comment">// this is referenced to the worldwide grid.</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> </div>
<div class="line"><a name="l00074"></a><span class="lineno"><a class="code" href="class_m_s_p_1_1_egm2008_aoi_grid.html#a882f33f382cab5ae03aa692772f0000b"> 74</a></span>  <span class="keywordtype">int</span> <a class="code" href="class_m_s_p_1_1_egm2008_aoi_grid.html#a882f33f382cab5ae03aa692772f0000b">_minAoiRowIndex</a>;</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> </div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="comment">// nAoiCols: The number of columns in the AOI grid.</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> </div>
<div class="line"><a name="l00078"></a><span class="lineno"><a class="code" href="class_m_s_p_1_1_egm2008_aoi_grid.html#ab6486c26d7c9406bf540c2a3502e39a0"> 78</a></span>  <span class="keywordtype">int</span> <a class="code" href="class_m_s_p_1_1_egm2008_aoi_grid.html#ab6486c26d7c9406bf540c2a3502e39a0">_nAoiCols</a>;</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> </div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="comment">// nAoiRows: The number of rows in the AOI grid.</span></div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> </div>
<div class="line"><a name="l00082"></a><span class="lineno"><a class="code" href="class_m_s_p_1_1_egm2008_aoi_grid.html#a3558b30ea151fa1ba2dc596ed25c04e6"> 82</a></span>  <span class="keywordtype">int</span> <a class="code" href="class_m_s_p_1_1_egm2008_aoi_grid.html#a3558b30ea151fa1ba2dc596ed25c04e6">_nAoiRows</a>;</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> </div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="comment">// nomAoiCols: Nominal number of columns in the AOI </span></div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="comment">// grid; actual number is latitude dependent.</span></div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> </div>
<div class="line"><a name="l00087"></a><span class="lineno"><a class="code" href="class_m_s_p_1_1_egm2008_aoi_grid.html#a5fb7870a9e94a08e3e606a1ad715864a"> 87</a></span>  <span class="keywordtype">int</span> <a class="code" href="class_m_s_p_1_1_egm2008_aoi_grid.html#a5fb7870a9e94a08e3e606a1ad715864a">_nomAoiCols</a>;</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> </div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="comment">// nomAoiRows: Nominal number of rows in the AOI grid.</span></div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> </div>
<div class="line"><a name="l00091"></a><span class="lineno"><a class="code" href="class_m_s_p_1_1_egm2008_aoi_grid.html#a97e78615987edf1321fc4075f7800219"> 91</a></span>  <span class="keywordtype">int</span> <a class="code" href="class_m_s_p_1_1_egm2008_aoi_grid.html#a97e78615987edf1321fc4075f7800219">_nomAoiRows</a>;</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> </div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="comment">// heightGrid: A pointer to a</span></div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="comment">// one-dimensional array containing a</span></div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="comment">// part of the reformatted geoid-height grid.</span></div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> </div>
<div class="line"><a name="l00097"></a><span class="lineno"><a class="code" href="class_m_s_p_1_1_egm2008_aoi_grid.html#a8642ad6b5e874203a9f72fc73fd55f65"> 97</a></span>  <span class="keywordtype">float</span>* <a class="code" href="class_m_s_p_1_1_egm2008_aoi_grid.html#a8642ad6b5e874203a9f72fc73fd55f65">_heightGrid</a>;</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> </div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keyword">public</span>:</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> </div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="comment">// Basic functions .....</span></div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> </div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <a class="code" href="class_m_s_p_1_1_egm2008_aoi_grid.html">Egm2008AoiGrid</a>( <span class="keywordtype">void</span> );</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> </div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <a class="code" href="class_m_s_p_1_1_egm2008_aoi_grid.html">Egm2008AoiGrid</a>( <span class="keyword">const</span> std::string &gridFname ); <span class="comment">// new 5/30/2013</span></div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  </div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <a class="code" href="class_m_s_p_1_1_egm2008_aoi_grid.html">Egm2008AoiGrid</a>( <span class="keyword">const</span> <a class="code" href="class_m_s_p_1_1_egm2008_aoi_grid.html">Egm2008AoiGrid</a>& oldGrid );</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> </div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  ~<a class="code" href="class_m_s_p_1_1_egm2008_aoi_grid.html">Egm2008AoiGrid</a>( <span class="keywordtype">void</span> );</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> </div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <a class="code" href="class_m_s_p_1_1_egm2008_aoi_grid.html">Egm2008AoiGrid</a>&</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  operator = ( <span class="keyword">const</span> <a class="code" href="class_m_s_p_1_1_egm2008_aoi_grid.html">Egm2008AoiGrid</a>& oldGrid );</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span> </div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="comment">// User functions .....</span></div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  </div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="comment">// geoidHeight: A function that interpolates</span></div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <span class="comment">// local geoid height (meters) from</span></div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="comment">// a reformatted EGM 2008 geoid height grid;</span></div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="comment">// this function uses bi-cubic spline interpolation.</span></div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span> </div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <span class="keyword">virtual</span> <span class="keywordtype">int</span></div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  geoidHeight(</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <span class="keywordtype">int</span> wSize, <span class="comment">// input</span></div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="keywordtype">double</span> latitude, <span class="comment">// input</span></div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="keywordtype">double</span> longitude, <span class="comment">// input</span></div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keywordtype">double</span>& gHeight ); <span class="comment">// output</span></div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> </div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keyword">protected</span>:</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  </div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <span class="comment">// geoidHeight: A function that interpolates</span></div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="comment">// local geoid height (meters) from</span></div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="comment">// a reformatted EGM 2008 geoid height grid;</span></div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="comment">// this function uses bilinear interpolation.</span></div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> </div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="keyword">virtual</span> <span class="keywordtype">int</span></div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  geoidHeight(</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="keywordtype">double</span> latitude, <span class="comment">// input</span></div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keywordtype">double</span> longitude, <span class="comment">// input</span></div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <span class="keywordtype">double</span>& gHeight ); <span class="comment">// output</span></div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span> </div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="comment">// loadAoiParms: A function that loads an AOI grid's</span></div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="comment">// parameters relative to an input worldwide grid.</span></div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> </div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="keywordtype">int</span></div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  loadAoiParms( </div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <span class="keywordtype">int</span> i0, <span class="keywordtype">int</span> j0 );</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span> </div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="comment">// loadGrid: A function that loads an AOI grid from</span></div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="comment">// a reformatted EGM 2008 worldwide geoid height grid.</span></div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span> </div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keywordtype">int</span></div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  loadGrid( <span class="keywordtype">void</span> );</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span> </div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="comment">// loadGridMetadata: A function that loads worldwide EGM 2008</span></div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="comment">// grid metadata from a reformatted worldwide grid file. </span></div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span> </div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keywordtype">int</span></div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  loadGridMetadata( <span class="keywordtype">void</span> );</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span> </div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  }; <span class="comment">// End of Egm2008AoiGrid class declaration</span></div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span> </div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span> } <span class="comment">// End of namespace block</span></div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> </div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span> <span class="comment">// CLASSIFICATION: UNCLASSIFIED</span></div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span> </div>
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