The graph below shows the average monthly change in the prices of three metals during 2014. Summarise the information by selecting and reporting the main features and make comparisons where relevant.

The given graph illustrates the median monthly alteration of the costs of three metals, including copper, nickel and zinc, in 2014.

Overall

, it can be seen that

while

the changes

of

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in

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copper's and zinc's prices were relatively stable, the figure for nickel witnessed more dramatic switches throughout the year. From January to June the cost of copper gradually decreased by approximately 3%;

however

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however,

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in July

they

Correct pronoun usage

it

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grew by more than 1% and remained at

the

Correct article usage

a

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constant level for the remainder of the period.

Although

the price of zinc surged by 2% in February, from

then

onward it significantly declined by roughly 4% until June. After that it stayed relatively stable;

however

soared during the

last

three months by approximately 3%, exceeding the changes

of

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in

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costs of remaining metals. The alterations of nickel's costs witnessed a wilder pattern. They plummeted by almost 9% from January until June

,

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and

then

rose by 2% in July.

Then

, it stabilised for 3 months, followed by a slight drop in October, and sharply surged by roughly 3% in November.

Finally

, it maintained at

the

Correct article usage

a

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constant level until the end of the year.