The estimated total number of people (in hundreds) living in dwellings that are exposed to each of the following bands of values of Lnight in dB 4 m above the ground on the most exposed fa?ade: 50-54, 55-59, 60-64, 65-69,
> 70, separately for road, rail and air traffic and for industrial sources. These data may also be assessed for value band 45-49 before the date laid down in Article 11(1).