What does the observer use to experience the average deviation of rounds during registration?

The average deviation of rounds during registration is determined by the summation of individual deviations. This method provides a reliable measure of how much the rounds vary from the intended impact point. By calculating the deviations of each impact relative to the target, the observer can sum these deviations to better analyze the overall performance of the fire support system being assessed. This helps the observer understand consistent patterns in firing accuracy, enabling adjustments to improve future targeting or fire missions.

Utilizing the summation of individual deviations allows the observer to gain a comprehensive view of how close or far each round falls from the desired mark, which is crucial for effective fire support operations. This cumulative approach is essential in determining necessary corrections and ensuring that artillery or mortar systems are fine-tuned for more accurate engagements in subsequent missions.