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. 2015 Jan 23;15:21. doi: 10.1186/s12879-014-0691-0

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© Springborn et al.; licensee BioMed Central. 2015

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Percentage deviations from mean daily individual average time viewed (Δ _t ) for various demographic groups in Mexico City. Panel A shows deviations for the aggregate population. Panel B distinguishes between adults and children. Panel C differentiates by socioeconomic level (SEL). Panel D presents the daytime versus nighttime response. The shaded area in each graph represents the intervention period τ.