What do the x, y and z axes of the Chart represent?
The x-axis displays the top 15 bid and ask limit orders. Orders that are significantly different than the traded price may distort the chart. The y-axis indicates the total number of shares being traded at each price point. Distinctive color shades indicate the size of each block being traded. The z-axis represents time. The graphical display is refreshed as frequently as one second intervals. Old data is shifted back and can represent up to the last 30 seconds of activity. Bid/Ask limit orders disappear from the chart when matched or expired.
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