Definition

Precision refers to how well a set of sensors reproduces the measurement of a pollutant under identical conditions (e.g., same concentration and temperature). Variation around the mean of a set of measurements obtained concurrently by two (2) or more sensors of the same type collocated under the same sampling conditions. The consistency in measurements from identical sensors is often quantified by standard deviation (SD) or the coefficient of variation (CV), with lower values indicating a more precise measurement.