If a student device reports data to a higher level of precision than required (e.g. nearest 0.1 ppm) — as permitted by a prior FAQ — what concentration should be scored? For example, should Event Supervisors round to the nearest ppm, truncate ...

The student should only report to the nearest whole number ppm. For teams that report beyond that specification, whatever rounding/truncating the event supervisor decides to use is acceptable as long as they are consistent in applying it to all teams.