jcaserta:
... a 1200x3 byte and a 1200x1 int, as opposed to a 1200x4 int. That still won't fit in flash memory but it will help anyway.
It'll probably fit into flash memory, if your program isn't too big. "Flash" refers to program memory, and there's a little less than 32K available. Flash, or program memory, is where your data resides when you declare it using "PROGMEM".
You need 6000 bytes for your data. If your program doesn't exceed about 25K or so, you should have room. The IDE tells you the compiled size of the sketch; you can see it in the lower window when compilation completes. The arrays won't fit into RAM, since there's only 2K of that.
Edit: spelling