The bar charts above illustrate the proportion of noise from four different categories affected in urban and rural areas by day and by night in 2007. These four categories of noise source include traffic, train, aircraft, and industry, with the data represented in millions. Overall, both of two areas have a similar trend, with the highest amount affected from traffic across by day and by night.
From an overall perspective, both cities and countryside estates have resemble tendency over four categories noise in all day. In 2007, a noise through the traffic had the greatest number, accounting for 64 millions in day and 48 millions at night located in the cities. Conversely, other noise sources were significantly similar. In urban, train provided noise in day more than in night. Moreover, aircraft and industry were provided least noise both in day and night, the industry estate was the least generated noise affected in cities at 1 millions in day and only 0.25 millions in night.
Another significant feature is that the noise influenced to rural residents less than in the urban area, with the similarly trend to the cities. Comparison to the cities, the traffic categories was the largest generation noise all day, accounting for 34 millions in day and 24 millions in night followed by train, aircraft, and industry. There was not occurred noise of industry both by day and by night.
In conclusion, in 2007, traffic was the dramatic greatest proportion of noise affected to both areas, while industry areas was the least proportion among four sources of noise.