In the range spotting sequence, what does "Doubtful" signify?

In the context of the range spotting sequence, the term "Doubtful" signifies that the observer is unable to determine the exact location of the projectile's impact. This condition arises when the impact cannot be distinctly categorized into clear outcomes like "OVER," "SHORT," "TARGET," or "RANGE CORRECT." When impacts are doubtful, it indicates uncertainty in the observation, which can occur due to factors such as visibility issues, obscured views, or the round landing in a location that does not provide a definitive clue about its position relative to the target. This uncertainty can significantly impact subsequent actions, as more observation or adjustment may be required to accurately ascertain the round's impact and provide effective fire support.