There is a third graph that is generated only when a trigger sensor is hooked up. This can be very instructive in showing up the now syndrome where a shooter makes a definite decision to take the shot and pulls the trigger rapidly to complete it thereby pulling the gun from the center of the target. In this case a rapid curve on the trigger graph will correspond with a sharp downward curve on the distance from target center graph. This sensor really only works well with triggers of air pistol weight or heavier. When initial fine calibration is completed by the shooter the unit takes the cant during those sighting shots and sets it as zero .
All angles shown from that point on are in relation to that setting.
Where it becomes instructive is when the angle changes as the match progresses. It may be because of physical fatigue, it may be caused by mental fatigue, or it could be good old fashioned complacency. Should the angle grow more than a degree or two there will certainly be a change in the point of impact in relation to apparent sight picture. This function merely shows each series as a ten shot target. Handy for seeing if the groups change as the match progresses, or if the groups expand as fatigue sets in.