The line graph depicts the change in the levels of contamination with sulfur dioxide and smoke in London from 1600 to 2000.
Overall, the amounts of both contaminants followed a similar trend, but the levels of sulphur dioxide were higher than those of the smoke. As regards the first, the content of sulfur dioxide in the atmosphere increased considerably from almost 0 to more than 750 micrograms by the first quarter of 18 century. It was followed by another peak of approximately 880 micrograms in 1850. By contrast, the air in London contained nearly 30 micrograms of smoke in 1580. However, then the levels of pollution were increasing gradually until the late 1800s, reaching a critical point of 400 micrograms per cubic meter. Finally, the levels of sulfur dioxide and smoke pollution fell dramatically by the end of the 20th century.
The considerable decrease during the last 200 years included wild fluctuations in the contents of both pollutants. London’s atmosphere had the levels of sulfur oxide changing repeatedly in the range of 125 to 550 micrograms per cubic meter. Meanwhile, the content of smoke fluctuates sharply between about 100 and 380 micrograms in one cubic meter. After 75 years of fluctuations, the people in London inhaled almost zero sulfur oxide and smoke by 2000.
In general, it is obvious that, though the amounts of sulphur oxide and smoke in London were increasing from 16th to the end of 19th century, the degree of air pollution in London now is sufficiently less than 200 years ago.
Grammar and spelling errors:
Line 2, column 301, Rule ID: CD_NN[1]
Message: Possible agreement error. The noun 'century' seems to be countable, so consider using: 'centuries'.
Suggestion: centuries
...0 micrograms by the first quarter of 18 century. It was followed by another peak of app...
^^^^^^^
Line 4, column 142, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...ng from 16th to the end of 19th century, the degree of air pollution in London no...
^^
Transition Words or Phrases used:
but, finally, first, however, then, while, as regards, in general
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 6.0 7.0 86% => OK
Auxiliary verbs: 0.0 1.00243902439 0% => OK
Conjunction : 6.0 6.8 88% => OK
Relative clauses : 1.0 3.15609756098 32% => OK
Pronoun: 4.0 5.60731707317 71% => OK
Preposition: 51.0 33.7804878049 151% => OK
Nominalization: 4.0 3.97073170732 101% => OK
Performance on vocabulary words:
No of characters: 1274.0 965.302439024 132% => OK
No of words: 255.0 196.424390244 130% => OK
Chars per words: 4.99607843137 4.92477711251 101% => OK
Fourth root words length: 3.99608801488 3.73543355544 107% => OK
Word Length SD: 2.76873854135 2.65546596893 104% => OK
Unique words: 130.0 106.607317073 122% => OK
Unique words percentage: 0.509803921569 0.547539520022 93% => More unique words wanted or less content wanted.
syllable_count: 376.2 283.868780488 133% => OK
avg_syllables_per_word: 1.5 1.45097560976 103% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 2.0 1.53170731707 131% => OK
Article: 9.0 4.33902439024 207% => Less articles wanted as sentence beginning.
Subordination: 3.0 1.07073170732 280% => Less adverbial clause wanted.
Conjunction: 1.0 0.482926829268 207% => Less conjunction wanted as sentence beginning.
Preposition: 3.0 3.36585365854 89% => OK
Performance on sentences:
How many sentences: 12.0 8.94146341463 134% => OK
Sentence length: 21.0 22.4926829268 93% => OK
Sentence length SD: 39.5453326365 43.030603864 92% => OK
Chars per sentence: 106.166666667 112.824112599 94% => OK
Words per sentence: 21.25 22.9334400587 93% => OK
Discourse Markers: 5.41666666667 5.23603664747 103% => OK
Paragraphs: 4.0 3.83414634146 104% => OK
Language errors: 2.0 1.69756097561 118% => OK
Sentences with positive sentiment : 1.0 3.70975609756 27% => More positive sentences wanted.
Sentences with negative sentiment : 1.0 1.13902439024 88% => OK
Sentences with neutral sentiment: 10.0 4.09268292683 244% => Less facts, knowledge or examples wanted.
What are sentences with positive/Negative/neutral sentiment?
Coherence and Cohesion:
Essay topic to essay body coherence: 0.124019921357 0.215688989381 57% => OK
Sentence topic coherence: 0.0519268331746 0.103423049105 50% => OK
Sentence topic coherence SD: 0.0479577599872 0.0843802449381 57% => OK
Paragraph topic coherence: 0.0982875146645 0.15604864568 63% => OK
Paragraph topic coherence SD: 0.0491601485221 0.0819641961636 60% => OK
Essay readability:
automated_readability_index: 12.7 13.2329268293 96% => OK
flesch_reading_ease: 58.62 61.2550243902 96% => OK
smog_index: 3.1 6.51609756098 48% => Smog_index is low.
flesch_kincaid_grade: 10.3 10.3012195122 100% => OK
coleman_liau_index: 11.72 11.4140731707 103% => OK
dale_chall_readability_score: 8.08 8.06136585366 100% => OK
difficult_words: 55.0 40.7170731707 135% => OK
linsear_write_formula: 11.0 11.4329268293 96% => OK
gunning_fog: 10.4 10.9970731707 95% => OK
text_standard: 11.0 11.0658536585 99% => OK
What are above readability scores?
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Rates: 61.797752809 out of 100
Scores by essay e-grader: 5.5 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.