[gradsusr] Can not open the files

[mehedi maswood]

Dear,
        I have installed grads-2.0.1.oga.1-win32_superpack.exe. My operating system is windows xp professional. I can open the sample data  set file easily. But I have a set of rainfall data that I need to read and convert it txt format. The data set contains only ctl and grd extension file. I could not open those file and facing difficultis. I am a new user of Grads. So, I need your advice very much. I attached one ctl file and two grd file to have a look. Please help me to solve this problem.

Thank you
Maswood  

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