For researchers
(Administrators)
For participants
(Standard user accounts)
For the public
(Limited user accounts)
Purpose Estimating personal exposures from ambient air pollution measures through (generated) personal exposure profiles among multiple participants Exploring personal exposure profiles aggregated by ordered sequences of activity-travel episodes Monitoring how levels of air pollution have changed over time across space
Access levels Complete access to database, and control over dashboard configuration Full access to their collected individual data, but limited control over the dashboard platform Limited access to the de-identified information about air pollution exposure, which is aggregated to averages per hours of the day across all study participants
Travel routes GPS tracks and travel trajectories as lines Travel trajectories as lines Grid aggregations
(squares) created through Geohash tools
Pollution measurements Individual exposure profile by pollutant concentrations measured Pollutant concentrations measured with the number hours of air quality standard (or guidelines) are exceeded Pollutant concentrations measured and contrasted with air quality data from static monitoring sites nearby (i.e., UK Automatic Urban and Rural Network as air quality monitors)
Spatial resolution Geographic location at a certain precision Personal daily trajectories at the street segment level Grid cells constructed by implemented Geomasking technique (e.g., geohash grid aggregation)
Temporal resolution Every minute for each of seven days Averaged to hour of the day for each of seven days Averaged to each hour of the day across the seven days (no disaggregation by day of the week)