Measures environmental calmness and background stability. Higher values mean a quieter, more stable acoustic environment. Lower values indicate more noise activity.

Daytime exposure approximates average continuous sound during daytime hours (typically 7:00–19:00). Higher values indicate quieter conditions.

Night exposure measures continuous sound during evening and sleeping hours (typically 19:00–07:00). Evening noise (19:00–23:00) is included with night noise (23:00–07:00) using weighted averages to better reflect impact on sleep. Values above 40 dB may disturb sleep quality and health, and even moderate levels can affect rest.

Health risk estimates exposure above recommended guidelines. Sustained noise exposure can affect sleep, stress, and long-term well-being. This indicator helps contextualize potential health implications.

Percentage of disruptive noise peaks during daytime (e.g., construction, horns, sudden loud events). It measures how frequently peaks exceed background levels, not overall continuous exposure. Higher values indicate fewer disturbances.

Percentage of disruptive noise peaks during nighttime hours. Night events are particularly important because peaks can interrupt sleep. Higher values indicate fewer disturbances.