R
Rincewindwiz
Kaju, Gavin
Thanks for that detailed explanation.
Visual inspection (binoculars) confirms no dirt, bird droppings etc on the 4 panel array
Today looks bright and clear so I will take readings throughout the day and post.
And I'll do the same on the next cloudy day (to get a more robust comparison).
But essentially, it looks like I am where I am and there is no sensible way to improve things.
On the bright side, it is only the 4 panel string that seems to be misbehaving and then not much
Thanks for that detailed explanation.
Visual inspection (binoculars) confirms no dirt, bird droppings etc on the 4 panel array
Today looks bright and clear so I will take readings throughout the day and post.
And I'll do the same on the next cloudy day (to get a more robust comparison).
But essentially, it looks like I am where I am and there is no sensible way to improve things.
On the bright side, it is only the 4 panel string that seems to be misbehaving and then not much
