The first line graph shows the changes in terms of the specification of the ozone home above Antarctic, and the second chart compares the amount three different gases causing damages to zone in 1980 and 2000.
It is clear that the sizes of the hold in ozone layer fluctuated over the 20-year period, and it was biggest in the year 2000. By looking at the numbers of the gas emission, CFC11 saw a steady drop during the given period, while both CFC-12 and N20 experienced different levels of increases.
In 1980, the size of the hole was the smallest, only around 60 square Km, and it had been increasingly enlarged to 2000 square Km by 1990. During the same period, CFC-11 was the major gas causing ozone damage, produced nearly 80 million tons in 1980, but it began to fall dramatically by half, to 40 million tons. There were only 24 million tons of CFC-12 at the beginning, and N20 were produced at this time.
The hole had been shrink for 5 years since 1990 before it jumped to its biggest size of 3,700 square Km. CFC-11 and CFC-12 were exhausted 40 million tones respectively, in the year 1990. Since then, Numbers of CFC-11 kept dropping at the same speed to merely 6 million tons in 2000, while CFC-12 reached it’s peak, at 50 million in the same year. N20 was firstly seen in 1990 and replaced CFC-11 to be a second contributor to ozone damage in 1995 with production of 20 tons.
Transition Words or Phrases used:
but, first, firstly, if, look, second, then, while
Attributes: Values AverageValues Percentages(Values/AverageValues)% => Comments
Performance on Part of Speech:
To be verbs : 11.0 7.0 157% => OK
Auxiliary verbs: 0.0 1.00243902439 0% => OK
Conjunction : 9.0 6.8 132% => OK
Relative clauses : 1.0 3.15609756098 32% => OK
Pronoun: 9.0 5.60731707317 161% => Less pronouns wanted
Preposition: 46.0 33.7804878049 136% => OK
Nominalization: 2.0 3.97073170732 50% => More nominalizations (nouns with a suffix like: tion ment ence ance) wanted.
Performance on vocabulary words:
No of characters: 1152.0 965.302439024 119% => OK
No of words: 253.0 196.424390244 129% => OK
Chars per words: 4.55335968379 4.92477711251 92% => OK
Fourth root words length: 3.98822939669 3.73543355544 107% => OK
Word Length SD: 2.33824451216 2.65546596893 88% => OK
Unique words: 136.0 106.607317073 128% => OK
Unique words percentage: 0.537549407115 0.547539520022 98% => OK
syllable_count: 314.1 283.868780488 111% => OK
avg_syllables_per_word: 1.2 1.45097560976 83% => OK
A sentence (or a clause, phrase) starts by:
Pronoun: 1.0 1.53170731707 65% => OK
Article: 3.0 4.33902439024 69% => OK
Subordination: 3.0 1.07073170732 280% => Less adverbial clause wanted.
Conjunction: 5.0 0.482926829268 1035% => Less conjunction wanted as sentence beginning.
Preposition: 7.0 3.36585365854 208% => Less preposition wanted as sentence beginnings.
Performance on sentences:
How many sentences: 9.0 8.94146341463 101% => OK
Sentence length: 28.0 22.4926829268 124% => The Avg. Sentence Length is relatively long.
Sentence length SD: 32.9784815738 43.030603864 77% => OK
Chars per sentence: 128.0 112.824112599 113% => OK
Words per sentence: 28.1111111111 22.9334400587 123% => OK
Discourse Markers: 5.55555555556 5.23603664747 106% => OK
Paragraphs: 4.0 3.83414634146 104% => OK
Language errors: 0.0 1.69756097561 0% => OK
Sentences with positive sentiment : 2.0 3.70975609756 54% => More positive sentences wanted.
Sentences with negative sentiment : 5.0 1.13902439024 439% => Less negative sentences wanted.
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: 0.144375288295 0.215688989381 67% => OK
Sentence topic coherence: 0.0713694476928 0.103423049105 69% => OK
Sentence topic coherence SD: 0.0668740072279 0.0843802449381 79% => OK
Paragraph topic coherence: 0.110559465417 0.15604864568 71% => OK
Paragraph topic coherence SD: 0.0606598635456 0.0819641961636 74% => OK
Essay readability:
automated_readability_index: 14.1 13.2329268293 107% => OK
flesch_reading_ease: 76.9 61.2550243902 126% => OK
smog_index: 3.1 6.51609756098 48% => Smog_index is low.
flesch_kincaid_grade: 9.5 10.3012195122 92% => OK
coleman_liau_index: 9.41 11.4140731707 82% => OK
dale_chall_readability_score: 7.52 8.06136585366 93% => OK
difficult_words: 40.0 40.7170731707 98% => OK
linsear_write_formula: 13.0 11.4329268293 114% => OK
gunning_fog: 13.2 10.9970731707 120% => OK
text_standard: 13.0 11.0658536585 117% => OK
What are above readability scores?
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Rates: 73.0337078652 out of 100
Scores by essay e-grader: 6.5 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.