If the red roof image represents the panels, you are not tracking, & therefore are significantly limiting your collected power.
To obtain a chart of the solar path in your area, see the University of Oregon website:http://solardat.uoregon.edu/SunChartProgram.html
It is of course not just the path of the sun, but what might be “in the way”, and your weather.
Even with the greater amount of atmosphere due to the low angle, at 10 degrees above the horizon, there may be available up to 50% of the total solar power. At around 30 degrees above the horizon the sunlight path thru the air is “short” enough that essentially full power is available to a panel perpendicular to the incoming solar rays. If you are not tracking though, that 10 degree above the horizon is something like 80 degrees off direct impact to your panel, meaning you do not collect much of it.
If your panels are two feet wide, to not shade each other on the E/W axis when tilted to only 10 degrees up from the horizon, they must be spaced apart nearly twelve feet. If you limit your morning/evening aim to 30 degrees above the horizon the panels need to be spaced only four feet apart. Depending upon factors such as your latitude, time of the year, and physical barriers, the difference between ten and thirty degrees may be a lot of solar sky-time missed.
Remember that if a solar panel is partially shaded, most lose a significant portion of their power generating capability, well beyond the percent of the panel shaded.
If you do NOT track at all, a key selection is the angle of the panels. Are you going to align for maximum noontime collection for summer, winter, or the equinoxes? If you align for the noon equinoxes, noon at the summer and winter solstices will be off by 23.5 degrees (only receiving 92% of potential power). While someone with better math skills could calculate accurately, at a ballpark during the solstices when the sun is around 35 degrees east or west of the panel, you are only getting 50% or so of the available power. A significant aspect for the summer solstice is that the sun rises and sets North of an East/West line. Checking the Yuma Chart, for us optimistically it appears that the fixed panel would not even "see" the summer sun at due east until around 0840, and the sun would pass north of the panel at around 1520. (6 hours and 40 minutes exposure)