A lot of our recent work has been handling of instrumentation accuracy issues and their impact on M&D decisions. When something looks off, first check the calculations. Then, if things still look “off” the next step is to check obvious things like units, and gauge vs. absolute pressures. Once you’re convinced the units are consistent, have you looked for data recording issues? Are their compression artifacts or signal dropouts? Finally, have the instruments been calibrated properly? Do they show signs of drift, low resolution, or improper readings in the case of redundant measurements?
In short, using advanced analytical tools opens up a wonderful world of knowledge, but the sensor inputs must be verified and checked.