The spiral chart shows page views for a given Wikipedia article over the past three years. Each spiral loop represents a year's worth of view data (the most recent data being at the outer end of the spiral), with each radial segment displaying a week's worth of data. The daily views within each week segment are color coordinated, with red cells indicating high views and light blue cells representing low views.
The key takeaways from this Demo test is that we:
The Demo is interactive - we can view the page views data for the past three years for any English Wikipedia page.