ChallengesTick chart
Tick chart for GBPUSD, showing each change in the ask or bid price. (If the spread is very tight then the lines may overlap, and only the ask line may be visible.)
As well as a plain tick chart, you can use the "Tick speed" mode to add an indicator showing how long it has taken for the last N ticks to happen. The lower the histogram, the faster the market is moving.
The "Timed" mode still shows each change in the ask or bid price, but the X axis of the chart is set to constant units of time. You can use this to view individual ticks while still being able to distinguish between fast and slow periods in the market.
The "Candles" mode draws tick candles. These are candles which form each time that N ticks happen, rather than being time-based.
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About GBPUSD
The GBPUSD currency pair is one of the largest and most commonly traded currency crosses on the forex market. The pair is often referred to as the "cable," in reference to the transatlantic telegraph wires connecting London and New York. The GBPUSD represents almost 15% of the total daily volume of transactions in forex. With such a formidable volume, GBP/USD is a definitive benchmark by which exchange rate valuations are measured globally. The pair represents two economies: British and American. After the result of the Brexit referendum, this pair has been suffering some turbulence due to risk related with the abandonment process from the European Union. The GBPUSD belongs to the group of 'Majors', which stands for the most important pairs in the world. Other currency pairs in this group are: EUR/USD, USD/JPY, AUD/USD, USD/CHF, NZD/USD and USD/CAD.