Please color code the diagnostic screen important status information to denote good, fair, poor as green, yellow, red.
Examples of the important sections of the diagnostics to color code would be:
L2 Satellites, Total Satellites, Heading DOP, HaLow Signal, Cellular Signal, WiFi Signal (if it existed in diagnostics and should), etc.
This should extend to other parts of the interface in the app as appropriate as well.