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Fig. 6 | Environmental Health

Fig. 6

From: Automated classification of time-activity-location patterns for improved estimation of personal exposure to air pollution

Fig. 6

Identifying transitions between indoor and outdoor microenvironments. (a) Time series of manual activity logs. Grey shaded areas indicate periods flagged as outdoor microenvironments with the rule-based algorithm. (b and c) Participant-specific thresholds (black dashed lines) of two parameters collected with the PAM (acceleration and number of visible satellites) were used to flag transitions between microenvironments. (d and e) In addition to manual logs, sudden changes in RH and ozone levels were used to evaluate the performance of the algorithm indirectly (f) Corresponding map of indoor (red) and outdoor (blue) microenvironments classified with the rule-based algorithm (g) 3D map visualising the number of satellites transmitting to the PAM GPS receiver. (h) 3D map of PAM ozone levels

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