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Quadrant Lines are a series of horizontal lines splitting the highest and lowest values of a security's prices into four equal sections. They provide for day trading methods yet another set of useless lines that probably do no more than clutter the screen.

To calculate them, find the highest high and the lowest low during the time period under question. The top line is drawn horizontally thru the highest price during the time period and the bottom line is drawn horizontally thru the lowest price during the time period. The remaining three lines are then drawn by dividing the the two outer lines into four equal sections. The center line (a.k.a. the "mean") is usually shown too.

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