Thanks for responding. I assumed that was the next step so I reduced the OP gain this afternoon. I measured 4.70k before adjusting and did my best to increase it 100 ohms, but the closest I could get it was 4.81k ohms. It is extremely twitchy, but I figured it was going to be from trying to adjust the pot for the FO wind instruments.
Today was very overcast because we have heavy rain approaching so the maximum reading was well down from the theoretical max. The graph does show the output taper off to 0 w/m2 after the sun went down instead of the reading floating at 12 w/m2 for hours. I am getting the occasional 1 w/m2, that you previously explained why it could happen, but so far no spikes above 1 w/m2 at night.
Today was very overcast because we have heavy rain approaching so the maximum reading was well down from the theoretical max. The graph does show the output taper off to 0 w/m2 after the sun went down instead of the reading floating at 12 w/m2 for hours. I am getting the occasional 1 w/m2, that you previously explained why it could happen, but so far no spikes above 1 w/m2 at night.