These alerts present information similar to their unconfirmed counterparts.  Each time the price of the last print crosses the open or the close, one of the preceding unconfirmed alerts appears.  The advantage of this is that the messages are instant, and the last message shows the current direction of the market.  The disadvantage is that it is noisy.  If the price stays near the open or the close, many alerts will appear.

The alerts listed here require statistical confirmation before they appear.  This filters out noise, but requires a slight delay.  This analysis involves price, time, and volume.  If the price continues to move around the open or close, this alert may never appear.  Once the price chooses a direction the exact amount of time required for the alert to appear depends on volume. 

The statistical analysis does not require that every print cross the open or the close before the alert is displayed.  The analysis filters out insignificant prints that go against the general trend.  It is even possible, although unlikely, that the last print disagrees with the analysis as a whole.