Hour × weekday map: when a symbol moves

The hour × weekday map places every hourly bar of a symbol on its weekday and hour and shows, for each of the 168 cells, the average move, how big the moves were and how often they closed up. It shows when a symbol tends to move and whether an hour has a habit that stands out from chance. It is a Pro Lab tool, part of the Pro and Elite plans.

Using it

1. On a computer, press Pro Lab on the right-hand toolbar; on a phone, open the analysis centre from the chart's bottom bar and choose Pro Lab. Then choose Hour × weekday map.
2. Pick a symbol from the search; the chart's symbol opens first.
3. Choose what the colours show: Average move, Move size or Up share.
4. Choose the clock: your own time zone or UTC.

Reading the results

• The first lines say when the symbol moves most and least, how much quieter its weekend hours are when it trades at weekends, and which hour has risen most steadily.
• With Average move and Up share, green cells rose and red ones fell; pale cells are within noise. With Move size, a darker cell is a bigger typical hour.
• The column at the right puts every hour of a weekday together and the row at the bottom an hour on every day: they are still figures for one hour, not a whole day's move.
• Hours that stood out lists the hours whose average was at least 3.62 standard errors from zero (the bar for 168 cells read together), rising and falling, with their t value.

Good to know

• The map reads the last 5,000 hourly bars: about 30 weeks for a coin, longer for a stock.
• Each bar's move is its close against the previous hour's close, or against its own open after a gap, so a weekend or overnight gap is not put on the first hour after it.
• At two standard errors about 8 of 168 cells would stand out by chance, so a cell needs 3.62, an hour row 3.08 and a weekday 2.69 (5% shared out over 168, 24 and 7). Even then, trust a pattern that holds in neighbouring hours or in the margins more than one bright cell.