Table 1. A summary of the functions and corresponding web applications that currently make up the covid19.Explorer R package.

Function name	Application tab	Description
age.deaths	Excess mortality by age	Graph weekly or cumulative excess mortality by age and jurisdiction.
compare.infections	State comparison	Compare daily or cumulative deaths and estimated daily or cumulative infections between states and U.S. jurisdictions.
covid.deaths	Deaths by age	Plot weekly or cumulative confirmed COVID-19 deaths by age group and compared to all deaths.
iceberg.plot	Iceberg plot	Graph observed daily confirmed SARS-CoV-2 cases (above the ‘waterline’ of the graph) and estimated unobserved infections (below it).
infection.estimator	Infection estimator	Estimate daily or cumulative SARS-CoV-2 infections based on observed deaths and confirmed cases.
infection.range.estimator	Plausible range	Estimate the plausible range of daily or cumulative infections based on an interval of IFR values at each time point.
infections.by.state	SARS-CoV-2 infections	Visualize geographic distribution of new or cumulative SARS-CoV-2 infections through time.
state.deaths	By state	Graph weekly or cumulative excess deaths by U.S. state.
updateData	Not applicable	Update the data used by covid19.Explorer from the web.