<p class="MsoNormal" style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt"><span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman','serif'; mso-ascii-theme-font: major-bidi; mso-fareast-font-family: 'Times New Roman'; mso-hansi-theme-font: major-bidi; mso-bidi-theme-font: major-bidi"><font face="arial,helvetica,sans-serif">Dear Justin</font></span></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt"><span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman','serif'; mso-ascii-theme-font: major-bidi; mso-fareast-font-family: 'Times New Roman'; mso-hansi-theme-font: major-bidi; mso-bidi-theme-font: major-bidi"><font face="arial,helvetica,sans-serif"> </font></span></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt"><span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman','serif'; mso-ascii-theme-font: major-bidi; mso-fareast-font-family: 'Times New Roman'; mso-hansi-theme-font: major-bidi; mso-bidi-theme-font: major-bidi"><font face="arial,helvetica,sans-serif">Header of file is as follow:</font></span></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt"><span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman','serif'; mso-ascii-theme-font: major-bidi; mso-fareast-font-family: 'Times New Roman'; mso-hansi-theme-font: major-bidi; mso-bidi-theme-font: major-bidi"><font face="arial,helvetica,sans-serif"> </font></span></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt"><span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman','serif'; mso-ascii-theme-font: major-bidi; mso-fareast-font-family: 'Times New Roman'; mso-hansi-theme-font: major-bidi; mso-bidi-theme-font: major-bidi"><font face="arial,helvetica,sans-serif"> </font></span></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt"><span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman','serif'; mso-ascii-theme-font: major-bidi; mso-fareast-font-family: 'Times New Roman'; mso-hansi-theme-font: major-bidi; mso-bidi-theme-font: major-bidi"><font face="arial,helvetica,sans-serif">@<span style="mso-spacerun: yes"> </span>title "Donor properties"<span style="mso-spacerun: yes"> </span></font></span></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt"><span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman','serif'; mso-ascii-theme-font: major-bidi; mso-fareast-font-family: 'Times New Roman'; mso-hansi-theme-font: major-bidi; mso-bidi-theme-font: major-bidi"><font face="arial,helvetica,sans-serif">@<span style="mso-spacerun: yes"> </span>xaxis<span style="mso-spacerun: yes"> </span>label "Time (ps)"<span style="mso-spacerun: yes"> </span></font></span></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt"><span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman','serif'; mso-ascii-theme-font: major-bidi; mso-fareast-font-family: 'Times New Roman'; mso-hansi-theme-font: major-bidi; mso-bidi-theme-font: major-bidi"><font face="arial,helvetica,sans-serif">@<span style="mso-spacerun: yes"> </span>yaxis<span style="mso-spacerun: yes"> </span>label "Number"<span style="mso-spacerun: yes"> </span></font></span></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt"><span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman','serif'; mso-ascii-theme-font: major-bidi; mso-fareast-font-family: 'Times New Roman'; mso-hansi-theme-font: major-bidi; mso-bidi-theme-font: major-bidi"><font face="arial,helvetica,sans-serif">@TYPE xy<span style="mso-spacerun: yes"> </span></font></span></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt"><span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman','serif'; mso-ascii-theme-font: major-bidi; mso-fareast-font-family: 'Times New Roman'; mso-hansi-theme-font: major-bidi; mso-bidi-theme-font: major-bidi"><font face="arial,helvetica,sans-serif">@ view 0.15, 0.15, 0.75, 0.85<span style="mso-spacerun: yes"> </span></font></span></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt"><span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman','serif'; mso-ascii-theme-font: major-bidi; mso-fareast-font-family: 'Times New Roman'; mso-hansi-theme-font: major-bidi; mso-bidi-theme-font: major-bidi"><font face="arial,helvetica,sans-serif">@ legend on<span style="mso-spacerun: yes"> </span></font></span></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt"><span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman','serif'; mso-ascii-theme-font: major-bidi; mso-fareast-font-family: 'Times New Roman'; mso-hansi-theme-font: major-bidi; mso-bidi-theme-font: major-bidi"><font face="arial,helvetica,sans-serif">@ legend box on<span style="mso-spacerun: yes"> </span></font></span></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt"><span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman','serif'; mso-ascii-theme-font: major-bidi; mso-fareast-font-family: 'Times New Roman'; mso-hansi-theme-font: major-bidi; mso-bidi-theme-font: major-bidi"><font face="arial,helvetica,sans-serif">@ legend loctype view<span style="mso-spacerun: yes"> </span></font></span></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt"><span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman','serif'; mso-ascii-theme-font: major-bidi; mso-fareast-font-family: 'Times New Roman'; mso-hansi-theme-font: major-bidi; mso-bidi-theme-font: major-bidi"><font face="arial,helvetica,sans-serif">@ legend 0.78, 0.8<span style="mso-spacerun: yes"> </span></font></span></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt"><span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman','serif'; mso-ascii-theme-font: major-bidi; mso-fareast-font-family: 'Times New Roman'; mso-hansi-theme-font: major-bidi; mso-bidi-theme-font: major-bidi"><font face="arial,helvetica,sans-serif">@ legend length 2<span style="mso-spacerun: yes"> </span></font></span></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt"><span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman','serif'; mso-ascii-theme-font: major-bidi; mso-fareast-font-family: 'Times New Roman'; mso-hansi-theme-font: major-bidi; mso-bidi-theme-font: major-bidi"><font face="arial,helvetica,sans-serif">@ s0 legend "Nbound"<span style="mso-spacerun: yes"> </span></font></span></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt"><span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman','serif'; mso-ascii-theme-font: major-bidi; mso-fareast-font-family: 'Times New Roman'; mso-hansi-theme-font: major-bidi; mso-bidi-theme-font: major-bidi"><font face="arial,helvetica,sans-serif">@ s1 legend "Nfree"<span style="mso-spacerun: yes"> </span></font></span></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt"><span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman','serif'; mso-ascii-theme-font: major-bidi; mso-fareast-font-family: 'Times New Roman'; mso-hansi-theme-font: major-bidi; mso-bidi-theme-font: major-bidi"><font face="arial,helvetica,sans-serif">1.950e+04<span style="mso-spacerun: yes"> </span>18<span style="mso-spacerun: yes"> </span>185</font></span></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt"><span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman','serif'; mso-ascii-theme-font: major-bidi; mso-fareast-font-family: 'Times New Roman'; mso-hansi-theme-font: major-bidi; mso-bidi-theme-font: major-bidi"><font face="arial,helvetica,sans-serif">1.950e+04<span style="mso-spacerun: yes"> </span>17<span style="mso-spacerun: yes"> </span>186</font></span></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt"><span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman','serif'; mso-ascii-theme-font: major-bidi; mso-fareast-font-family: 'Times New Roman'; mso-hansi-theme-font: major-bidi; mso-bidi-theme-font: major-bidi"><font face="arial,helvetica,sans-serif">1.951e+04<span style="mso-spacerun: yes"> </span>19<span style="mso-spacerun: yes"> </span>184</font></span></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt"><span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman','serif'; mso-ascii-theme-font: major-bidi; mso-fareast-font-family: 'Times New Roman'; mso-hansi-theme-font: major-bidi; mso-bidi-theme-font: major-bidi"><font face="arial,helvetica,sans-serif">1.951e+04<span style="mso-spacerun: yes"> </span>16<span style="mso-spacerun: yes"> </span>187</font></span></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt"><span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman','serif'; mso-ascii-theme-font: major-bidi; mso-fareast-font-family: 'Times New Roman'; mso-hansi-theme-font: major-bidi; mso-bidi-theme-font: major-bidi"><font face="arial,helvetica,sans-serif">1.952e+04<span style="mso-spacerun: yes"> </span>18<span style="mso-spacerun: yes"> </span>185</font></span></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt"><span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman','serif'; mso-ascii-theme-font: major-bidi; mso-fareast-font-family: 'Times New Roman'; mso-hansi-theme-font: major-bidi; mso-bidi-theme-font: major-bidi"><font face="arial,helvetica,sans-serif">1.952e+04<span style="mso-spacerun: yes"> </span>17<span style="mso-spacerun: yes"> </span><span style="mso-spacerun: yes"> </span>186</font></span></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt"><span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman','serif'; mso-ascii-theme-font: major-bidi; mso-fareast-font-family: 'Times New Roman'; mso-hansi-theme-font: major-bidi; mso-bidi-theme-font: major-bidi"><font face="arial,helvetica,sans-serif">1.952e+04<span style="mso-spacerun: yes"> </span>16<span style="mso-spacerun: yes"> </span>187</font></span></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt"><span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman','serif'; mso-ascii-theme-font: major-bidi; mso-fareast-font-family: 'Times New Roman'; mso-hansi-theme-font: major-bidi; mso-bidi-theme-font: major-bidi"><font face="arial,helvetica,sans-serif">1.953e+04<span style="mso-spacerun: yes"> </span>18<span style="mso-spacerun: yes"> </span>185</font></span></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 0pt; LINE-HEIGHT: normal; tab-stops: 45.8pt 91.6pt 137.4pt 183.2pt 229.0pt 274.8pt 320.6pt 366.4pt 412.2pt 458.0pt 503.8pt 549.6pt 595.4pt 641.2pt 687.0pt 732.8pt"><span style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman','serif'; mso-ascii-theme-font: major-bidi; mso-fareast-font-family: 'Times New Roman'; mso-hansi-theme-font: major-bidi; mso-bidi-theme-font: major-bidi"><font face="arial,helvetica,sans-serif">1.953e+04<span style="mso-spacerun: yes"> </span>18<span style="mso-spacerun: yes"> </span>185<span style="mso-spacerun: yes"> </span></font></span></p>
<p class="MsoNormal" style="MARGIN: 0in 0in 10pt"><span style="FONT-SIZE: 10pt; LINE-HEIGHT: 115%; FONT-FAMILY: 'Times New Roman','serif'; mso-ascii-theme-font: major-bidi; mso-fareast-font-family: 'Times New Roman'; mso-hansi-theme-font: major-bidi; mso-bidi-theme-font: major-bidi"><font face="arial,helvetica,sans-serif"> </font></span></p>
<div class="MsoNormal" style="MARGIN: 0in 0in 10pt"><span style="FONT-SIZE: 10pt; LINE-HEIGHT: 115%; FONT-FAMILY: 'Times New Roman','serif'; mso-ascii-theme-font: major-bidi; mso-fareast-font-family: 'Times New Roman'; mso-hansi-theme-font: major-bidi; mso-bidi-theme-font: major-bidi"><font face="arial,helvetica,sans-serif">What do Nbound and Nfree denote exactly?</font></span></div>
<div class="MsoNormal" style="MARGIN: 0in 0in 10pt"><span style="FONT-SIZE: 10pt; LINE-HEIGHT: 115%; FONT-FAMILY: 'Times New Roman','serif'; mso-ascii-theme-font: major-bidi; mso-fareast-font-family: 'Times New Roman'; mso-hansi-theme-font: major-bidi; mso-bidi-theme-font: major-bidi"><font face="arial,helvetica,sans-serif">summation of Nbound and Nfree is constant. what is that (summation)?</font></span></div>
<div class="MsoNormal" style="MARGIN: 0in 0in 10pt"><span style="FONT-SIZE: 10pt; LINE-HEIGHT: 115%; FONT-FAMILY: 'Times New Roman','serif'; mso-ascii-theme-font: major-bidi; mso-fareast-font-family: 'Times New Roman'; mso-hansi-theme-font: major-bidi; mso-bidi-theme-font: major-bidi"><font face="arial,helvetica,sans-serif"></font></span> </div>