Fig. 4: Overview of the volunteer data used in this study.
From: Optimising self-organised volunteer efforts in response to the COVID-19 pandemic
Left top: The Stacked area plot shows the average number of volunteer tasks in each of the six categories (in a 2-week window) over the entire duration of the study; Red line plot shows the total number of volunteer participants per day; Left Bottom: External information used in the causality analysis. The colour shading indicates the stringency of a policy group or the number of COVID-19 cases. Details on the data can be found in the “Methods” section. Right: Timelines for positive, negative, and reopening policies.
