Looking at percentiles is a way of dividing up the population into low (0-25th percentile), medium (25-75th percentile), high (75th-95th percentile), and very high (equal or above 95th percentile) exposures. For example, if you are in the 25th percentile of exposure, you have lower exposures than 75% of the population. If you are in the 50% percentile, about half of the population is below you, and half above. We compare your exposures to the general public, as well as to other Million Marker users.