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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 bar chart information about the proportion of good quality across four different locations: Wales, Northern Ireland, England and Scotland from 1990 to 2002.
Overall, it can clearly seen that river in Wales and Northern Ireland had allway remained better level. Additionally, with the expectation of Wales, all these locations showed the ability of improvement about water cleanliness over the period.
With regard to the two leading nations, In 1990, roughly to 96% of rivers in wales were classified as having good water level, noticeably higher than Northern Ireland’s 83%. In the following years, Wale’s water quality remained relatively stable until 1998, before declining sharply to 80% in 2002. Meanwhile, Northern Ireland’s river gradually recovery, with its figure rising to nearly 100% in 2000, and then slightly falling to 96% by 2002.
Regarding the remaining countries, in 1990, around 20% of river in Scotland were the lowest data during the period, less than half England’s 45%. In the following years, Scotland’s river rose steadily, reaching 60% in 2000, and then declining to 40% by 2002. Meanwhile, England’s river rose sharply to a peal at 70% in 1996, followed by drammatically fell back to 30% in 1998, and then rose slightly to 40% in 2002.
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