Probability of Detection (POD).
Expressed in terms of a percentage, this is the probability that a clue would have been seen or detected, given the application of a particular search resource under specified conditions. Stated differently, POD refers to the number of clues - out of 100 - that a resource would have detected in a particular area. For example, a grid team in which searchers are spaced 10 feet apart is estimated to yield a 95% POD, while the same team using 50 foot spacing acquires a 75% POD. Every resource will have its own POD, depending on skill, terrain, vegetation, weather conditions, and the nature of the available clues. Cumulative POD refers to that probability of detection an area has acquired after two or more search resources have been applied. POD is the single most important indication of search progress and no competent Plans Chief would ignore it.