Below are the thumbnails of our 2006 generation days. Click on any of them to see the full size graph for the day. Unfortunately, I didnt't get monitoring set up until March 23, 2006, whereas we'd had the panels in place since the 10th of November, 2005. We'd already generated well over a megawatthour before I had anything in place to see how we were doing.
These graphs, aside from showing pictorally how much power per unit time we get, are a good indication of cloud cover as well. On very dark, cloudy and/or rainy days, we rarely seem to break 500W/second. I remember a low of roughly one-quarter of a kilowatthour for one particularly stormy day. On very clear days there's some very impressive output. We regularly reach the maximum output of the panels on those days (or slightly beyond), which is 3 kW/second.
As with others, all graphs are the number of watts per second for a given time during the normal production hours.