EKF2 distance sensor messages

Hi all, I am logging some ekf2 messages related to different distance sensors on the UAV that I am flying. I have 2 side distance sensors and 1 downward pointing that has ID #2. I get the messages that are shown in the attached image at random points in the flight, but in particular at the start of it. Any idea of what they mean and if I can ignore them?
The flight performance itself was not compromised by it (at least not in a visible manner) and the drone was flying well

~Nick

Got a log? https://review.px4.io/