Map symbols - values kind of translucent/faded

I’m trying to determine the meaning of the way values display on the map. For instance, some values have the dark circle around the value (inside monitor) while others do not. But some values are slightly faded and others full color. What is that distinction?

If I’m not mistaken, faded values are typically outdoor sensors where there has been some discrepancy in readings between the two channels (A and B), i.e. the sensor may not be trustworthy/accurate.