Which factor is NOT considered when determining the safety distances for a fireworks display?

When determining safety distances for a fireworks display, various factors are evaluated to ensure the safety of both the attendees and nearby structures. The height of spectators is not a factor in this calculation. Instead, the primary concerns focus on aspects like the type of fireworks being used, which determines the potential hazards and required safety zones, as well as the weather conditions that can affect how fireworks behave, especially in terms of wind direction and intensity. Additionally, the distance to the nearest building is crucial to prevent potential damage to property and ensure the safety of occupants.

In contrast, the height of spectators does not influence the calculation of safety distances, as safety regulations and recommendations are based on the physical properties of the fireworks and environmental conditions rather than the elevation of the viewing audience. This is why understanding the correct parameters for safety distances involves excluding the height of spectators from considerations.