Data is updated daily at 6 pm EST. Source: https://covidtracking.com/data
First number is daily new cases. The second number is daily new cases for previous day (based on the slider date). Shades of green (light to dark) denote progress i.e. darker green is the best direction of change. Shades of red (light to dark) denote regress i.e. darker red is the worst direction of change.
Click on legends to enable/disable a particular group.