The VPS distance is displayed in small font on the screen when within 20ft or so. As an aside, the color of the font looks red to me when flying, not orange.
However, as the logs uploaded show, it was changing constantly, as expected when over a dynamic, rising and falling surface. Just because it showed 10ft at one instance means nothing in this case. Again, as the logs show, right before the end the VPS distance was decreasing, getting to single digits. Given how far the drone was from the RC and how much obstruction was between the RC and the drone flying so low, I expect a combination of factors resulted in signal loss shortly before an ocean wave rose up and hit it, so the final VPS data showing 0-4ft is missing from the logs on the RC.