When reporting lightning in remarks, which of the following items is unnecessary?

When reporting lightning in remarks, indicating the begin and end times is considered unnecessary because the primary focus is on the occurrence of lightning rather than the specific duration of its presence. The other aspects, such as frequency, type, and location, provide valuable information that can be critical for safety and situational awareness. Frequency allows for understanding how often lightning is striking, type identifies the kind of lightning observed (for example, cloud-to-ground), and location details where the lightning activity is occurring, which is essential for evaluating threats in nearby areas. In contrast, begin and end times do not typically contribute to the immediate operational weather considerations and are not standard practice in reporting lightning within aviation meteorology.