I want to use 3-hour rainfall data from 12-01-2002 to 05-31-2010 for my rain gage, but every time I ran the model, it always appears error 321 no data in rainfall interface file for gage or error 319 invalid format for rainfall interface file. How can I solve this problem? Can anybody make a small example of rainfall data input for my case? What is the format of it? I really appreciate it!!