Aircraft status

flew for 3 batteries today. No problems except…at most heights up to 200 feet I kept getting a green band where the system status bar appears if too near obstacles. Sometimes a yellow half bar appeared above this green indication. I was nowhere near to any obstacles.( Mavic Air). It only happened in very short bursts. Cannot find anything in the manual to explain it. Anyone any suggestions? Thanks

The sensors can be tricked by the sun, especially in winter when its lower in the sky, could it have been this?

Not this time it was overcast and not very bright

Props in the way of the sensors or droplets of damp moisture on the sensor.

Thanks Brian could well have been moisture on the sensors