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The image displays a line graph with x-axis labeled from 1980 to 1996 and y-axis from 0 to 1400, depicting complaints. Data points: Road Works (1980: 200, 1982: 250, 1984: 300, 1986: 600, 1988: 800, 1990: 950, 1992: 1150, 1994: 1250, 1996: 1300), Factories (1980: 600, 1982: 620, 1984: 500, 1986: 400, 1988: 300, 1990: 280, 1992: 200, 1994: 160, 1996: 140), Traffic Noise (1980: 300, 1982: 400, 1984: 500, 1986: 550, 1988: 750, 1990: 800, 1992: 850, 1994: 900, 1996: 950), Domestic/household (1980: 740, 1982: 600, 1984: 460, 1986: 320, 1988: 280, 1990: 200, 1992: 150, 1994: 100, 1996: 50). Each category is represented by a distinct line type: Road Works (solid line with diamonds), Factories (solid line with squares), Traffic Noise (solid line with triangles), Domestic/household (solid line with crosses).
Given the complexity of the image, the above description may not be entirely accurate.
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The given line graph illustrates the complaints on noise from four different categories to Environmental Health authorities from 1980 to 1996
Overall, it is evident that there was an increase in the number of complaints about noise from road works, factories, and traffic while the opposite was true for domestic noise.
The figure for road works started at around 500, after which it experienced a gradual decline in 1984, before increasing to a peak of more than 1200 in 1996. The number of complaints made about traffic noise mirrored a similar pattern albeit to a lesser extent. Having stabilized at approximately 300 from 1980 to 1984, this figure decreased to 200 in 1986 and increased significantly to 600 in the final year.
Around 400 complaints about noise from factories were made in 1980, and this figure witnessed a consistent increase to about 700 in 1996. Conversely, the figure for household noise was at around 610 in 1980, but it plunged to the bottom of under 100 at the end of the period.
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