<P><FONT size="3" face="Times New Roman ">Dear Dr. Wang and Kishore,</FONT></P>
<P><FONT size="3" face="Times New Roman">Thank you so much for your help! I have hnown how to get the data file, and then I want to calculate the average pdsi value of china in OpenGrads, I tried to learn it from grads documtation index and climate forum, but I still don't konw how to do it now as I'm really a freshman with meteoinfo and many grads usages. so can you give me some guidance or tips on how to calculate it easily, thanks!</FONT></P>
<P><FONT size="3" face="Times New Roman">Look forward to your reply and guidance~thanks a lot~~</FONT></P>
<P><FONT size="3" face="Times New Roman">Zhihong</FONT></P>
<P><BR><SPAN><BR> </SPAN></P>
<P> Zhihong Zhuo,Postgraduate Student</P>
<P><FONT face="Times New Roman"> College of Environmental and Resource Sciences, Zhejiang University</FONT></P>
<P><FONT face="Times New Roman">Address: 866 Yuhangtan Road, Hangzhou, China</FONT></P>
<P><FONT face="Times New Roman">Email: <A href="mailto:fairyes@zju.edu.cn" target="_blank">fairyes@zju.edu.cn</A></FONT></P>
<P><FONT face="Times New Roman"></FONT> </P>