We used primarily an Aquant that reads from 0 to 999 that has lights that range from green to yellow to red as the moisture level detection increases. Most of the boat was safely in the green but the wet area was all in the red and the numerical reading went from 400 to pegged. We also used an analog moisture meter that read percentages. Most of the boat was at 10% or less and the wet area went from 15% to pegged which was over 30%. As far as mapping, re-read the above first couple lines.