The markets overview
All your markets on one page: averages across them, and one row per market with your product's numbers.
Choose Markets in the sidebar. The overview answers one question: is anything different? Everything on it is either a headline number or a way into a market.
The strip across the top
Averages across the markets you are looking at: Avg. visibility, Avg. position, Avg. top 10 and Avg. JR Score. Next to them, Keywords on page 1 and the Position trend: in how many markets your product is climbing and in how many it is falling.
They are useful for noticing and useless for diagnosing. A drop of four points of visibility can be one market collapsing or five markets slipping a little, and the strip cannot tell you which.
The market table
One row per market, with the numbers of your best-placed product in it: visibility, average position, position trend, JR Score, Top 10, coverage, volatility, and the latest "bought in past month", rating and price.
Sort by whatever you are looking for rather than reading from top to bottom: the largest change is more interesting than the largest market. Open a row to see the market keyword by keyword, with a small heat strip of positions for each, and choose Open market to go in.
Each row also shows the market's tags; Edit tags changes them.
Filters and period
The Tags filter narrows the table and the strip to the markets with the tags you select. The date picker sets the period for everything on the page, and every change is measured against the period of the same length before it.