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<pre style="margin-top:14pt; margin-bottom:14pt">Dear professor Laurence:</pre>
<pre style="margin-top:14pt; margin-bottom:14pt">Thank you for your reply. I used MSR1a mode in my calculation. BTW, I didn't know that there's a difference in <span style="font-family: Tahoma;">the force convergence </span><span style="font-family: Tahoma;">between PORT and MSR1a. If possible, could you tell me about it as well?</span></pre>
<pre style="margin-top:14pt; margin-bottom:14pt"><span style="font-family: Tahoma;">Best regards,</span></pre>
<pre style="margin-top:14pt; margin-bottom:14pt"><span style="font-family: Tahoma;">Wenhao</span></pre>
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