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The image displays a line graph titled "River Water Quality in the UK" tracking data from 1990 to 2002 for Wales, Northern Ireland, England, and Scotland. The y-axis ranges from 0 to 100%, marked at intervals of 10, and represents "Good chemical quality %". Data for each region shows: Wales starting near 95% in 1990, peaking just below 100% around 1994, dipping slightly in 1996, and stabilizing near 95% in 2002. Northern Ireland begins around 60% in 1990, shows a sharp improvement to nearly 90% by 1994, sees a sharp drop back to 60% in 1996, recovers to around 90% by 1998 and 2000, dropping sharply again by 2002. England starts just above 70% in 1990, dips slightly below during the mid-90s, and climbs back to just above 70% by 2002. Scotland begins just under 90% in 1990, experiences a gradual decrease to about 80% by 2002. The graph uses distinct line styles for each region, plotted on a horizontally-oriented rectangular plot area with a grid.
Given the complexity of the image, the above description may not be entirely accurate.
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The line graph gives information about the proportion of river water quality in 4 parts of UK which was classified as having good chemical substances in it from 1990 and 2002.
Overall,although Wales was dominated by 2000, however, its palce was overtaken by Northern Ireland after 2000.Moreover. Scotland was the city where did not have high quality of river water.Nevertheless, in 2000, its was able to reach its peak.
At the beginning of the survey, Wales was country where its rives had good chemical quality which was about 95%. However, after 1998 , it experienced gradual decrease. In 2002, it decreased to roughly 80%. As for Northern Ireland,from 1990 to 1998, it was the second place that has high quality water with around 87%. But, at the end of the survey, it dominated with approximately 96%.By 1996, England experienced steady raise from about 57% in 1990 to roughly 70% in 1996. However, it experienced sharp decrease about 30 % in 1998. Nonetheless, after 1998, it increased gradually to around 50%. Between 1990 and 1996, it did not experience much high increase only about 7%(from 22% in 1990 to 30% in 1996). However, it reached its peak in 2000 with aroung 60 %.
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