The graph below shows the production levels of main fuels in a European country from 1981 to 2000

The line graph illustrates the production levels of 3 different natural fuels, namely Petroleum, Coal, and Natural gas, in a particular European nation between 1981 and 2000.
Overall, it is clear that while natural gas produced had an upward trend during a period of 2 decades, this opposite was true for others fuels. In addition, of the 3 examined fuels, the production of natural gas also had a relatively stable growth rate.
To begin with, in 1981, petroleum was the main type of fuels which was used for production, with nearly 100 tons, surpassed the amount of coal and natural gas generated, with 80 tons and 40 tons, respectively. Over 20 years, these figures changes significantly. The production level of petroleum was still a leading fuel, with about 120 tons, while there was a dramatical difference in the positions of the remaining 2 fuels. The natural gas experienced a rapid growth rate in the figure for production, reaching at the second place with approximately 80 tons, whereas the coal usage decreased, only at a threshold of below 40 tons.
Meanwhile, during this period, the fluctuation in the quantity of fuels generated was considerably huge. Dominating at the first place in 1981, the production levels of petroleum continued to rise to 1983, then experienced a stable period of 4 years, after sharply dropped at below 100 tons before having a tendency to increase in the last years. In contrast, a large amount of coal produced had a downward trend from 1981 to 2000, especially the fluctuation period in 1984 - 1987 recorded the lowest figure for coal production was only 45 tons. Natural gas, despite standing at the last position in the beginning of the period, had a overwhelming increase between 1997 and 2000, became the second fuel used for production, reaching a peak at nearly 82 tons.

Votes
Average: 6.7 (1 vote)
Essays by the user:

Grammar and spelling errors:
Line 4, column 633, Rule ID: EN_A_VS_AN
Message: Use 'an' instead of 'a' if the following word starts with a vowel sound, e.g. 'an article', 'an hour'
Suggestion: an
...ion in the beginning of the period, had a overwhelming increase between 1997 and ...
^

Transition Words or Phrases used:
also, first, if, second, so, still, then, whereas, while, in addition, in contrast, to begin with

Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments

Performance on Part of Speech:
To be verbs : 8.0 7.0 114% => OK
Auxiliary verbs: 0.0 1.00243902439 0% => OK
Conjunction : 5.0 6.8 74% => OK
Relative clauses : 2.0 3.15609756098 63% => OK
Pronoun: 5.0 5.60731707317 89% => OK
Preposition: 54.0 33.7804878049 160% => OK
Nominalization: 13.0 3.97073170732 327% => Less nominalizations (nouns with a suffix like: tion ment ence ance) wanted.

Performance on vocabulary words:
No of characters: 1520.0 965.302439024 157% => OK
No of words: 306.0 196.424390244 156% => Less content wanted.
Chars per words: 4.96732026144 4.92477711251 101% => OK
Fourth root words length: 4.18244613648 3.73543355544 112% => OK
Word Length SD: 2.79574101283 2.65546596893 105% => OK
Unique words: 156.0 106.607317073 146% => OK
Unique words percentage: 0.509803921569 0.547539520022 93% => More unique words wanted or less content wanted.
syllable_count: 449.1 283.868780488 158% => OK
avg_syllables_per_word: 1.5 1.45097560976 103% => OK

A sentence (or a clause, phrase) starts by:
Pronoun: 3.0 1.53170731707 196% => OK
Article: 7.0 4.33902439024 161% => OK
Subordination: 2.0 1.07073170732 187% => OK
Conjunction: 1.0 0.482926829268 207% => Less conjunction wanted as sentence beginning.
Preposition: 13.0 3.36585365854 386% => Less preposition wanted as sentence beginnings.

Performance on sentences:
How many sentences: 11.0 8.94146341463 123% => OK
Sentence length: 27.0 22.4926829268 120% => The Avg. Sentence Length is relatively long.
Sentence length SD: 54.8640694417 43.030603864 128% => OK
Chars per sentence: 138.181818182 112.824112599 122% => OK
Words per sentence: 27.8181818182 22.9334400587 121% => OK
Discourse Markers: 8.81818181818 5.23603664747 168% => OK
Paragraphs: 4.0 3.83414634146 104% => OK
Language errors: 1.0 1.69756097561 59% => OK
Sentences with positive sentiment : 8.0 3.70975609756 216% => Less positive sentences wanted.
Sentences with negative sentiment : 1.0 1.13902439024 88% => OK
Sentences with neutral sentiment: 2.0 4.09268292683 49% => OK
What are sentences with positive/Negative/neutral sentiment?

Coherence and Cohesion:
Essay topic to essay body coherence: 0.19187823124 0.215688989381 89% => OK
Sentence topic coherence: 0.0761877511641 0.103423049105 74% => OK
Sentence topic coherence SD: 0.0656733625422 0.0843802449381 78% => OK
Paragraph topic coherence: 0.1306328874 0.15604864568 84% => OK
Paragraph topic coherence SD: 0.0795221393416 0.0819641961636 97% => OK

Essay readability:
automated_readability_index: 15.9 13.2329268293 120% => OK
flesch_reading_ease: 52.53 61.2550243902 86% => OK
smog_index: 8.8 6.51609756098 135% => OK
flesch_kincaid_grade: 12.6 10.3012195122 122% => OK
coleman_liau_index: 11.84 11.4140731707 104% => OK
dale_chall_readability_score: 8.12 8.06136585366 101% => OK
difficult_words: 61.0 40.7170731707 150% => OK
linsear_write_formula: 14.0 11.4329268293 122% => OK
gunning_fog: 12.8 10.9970731707 116% => OK
text_standard: 13.0 11.0658536585 117% => OK
What are above readability scores?

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Rates: 67.4157303371 out of 100
Scores by essay e-grader: 6.0 Out of 9
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Note: the e-grader does NOT examine the meaning of words and ideas. VIP users will receive further evaluations by advanced module of e-grader and human graders.