Roger...yes, date as X and Ecuador and Sumatra/Nicobar as to separate Y curves. Could just be by day, or by 12 hours...I probably cannot run your program, but could just plot the text file using Excel....if I feel I have an extra half hour or hour I can put it up where it can be linked to. Go ahead and email me the text file...I probably cannot take a .zip file as they are a virus risk. I guess I need to look at Don's list earlier in the day as I had trouble understanding his post.
Chris