The two pie charts show the main sourses of energy in the USA in the 1980s and the 1990s.

Grammar and spelling errors:
Line 1, column 114, Rule ID: SENTENCE_WHITESPACE
Message: Add a space between sentences
Suggestion: It
...sources of energy by USA in 80s and 90s.It is caliberated in per centum . It is...
^^
Line 1, column 145, Rule ID: COMMA_PARENTHESIS_WHITESPACE
Message: Don't put a space before the full stop
Suggestion: .
... and 90s.It is caliberated in per centum . It is clearly seen that oil was the ...
^^
Line 3, column 68, Rule ID: SENTENCE_FRAGMENT[1]
Message: “Which” at the beginning of a sentence requires a 2nd clause. Maybe a comma, question or exclamation mark is missing, or the sentence is incomplete and should be joined with the following sentence.
... was the main source of energy in 1980. Which is 42% of the total.In addition to this...
^^^^^
Line 3, column 94, Rule ID: SENTENCE_WHITESPACE
Message: Add a space between sentences
Suggestion: In
...ergy in 1980. Which is 42% of the total.In addition to this,over a quarter had bee...
^^
Line 3, column 113, Rule ID: COMMA_PARENTHESIS_WHITESPACE
Message: Put a space after the comma
Suggestion: , over
... is 42% of the total.In addition to this,over a quarter had been covered by the natur...
^^^^^
Line 3, column 165, Rule ID: IN_1990s[1]
Message: The article is probably missing here: 'in the 1980s'.
Suggestion: in the 1980s
...ter had been covered by the natural gas in 1980s. Furthermore,coal,hydroelectric power a...
^^^^^^^^
Line 3, column 186, Rule ID: COMMA_PARENTHESIS_WHITESPACE
Message: Put a space after the comma
Suggestion: , coal
...by the natural gas in 1980s. Furthermore,coal,hydroelectric power as well as nuclear ...
^^^^^
Line 3, column 269, Rule ID: SENTENCE_WHITESPACE
Message: Add a space between sentences
Suggestion: Which
...r power were also the sources of energy.Which were about 22%,5% and 5% respectively. ...
^^^^^
Line 5, column 9, Rule ID: COMMA_PARENTHESIS_WHITESPACE
Message: Put a space after the comma
Suggestion: , in
... 22%,5% and 5% respectively. Secondly,in 1990s the main contribution in the ener...
^^^
Line 5, column 10, Rule ID: IN_1990s[1]
Message: The article is probably missing here: 'in the 1990s'.
Suggestion: in the 1990s
...22%,5% and 5% respectively. Secondly,in 1990s the main contribution in the energy was...
^^^^^^^^
Line 5, column 107, Rule ID: SENTENCE_WHITESPACE
Message: Add a space between sentences
Suggestion: Apart
... natural gas which was 33% of the total.Apart from this,natural gas had covered exact...
^^^^^
Line 5, column 122, Rule ID: COMMA_PARENTHESIS_WHITESPACE
Message: Put a space after the comma
Suggestion: , natural
...ich was 33% of the total.Apart from this,natural gas had covered exactly the quarter in ...
^^^^^^^^
Line 5, column 175, Rule ID: SENTENCE_WHITESPACE
Message: Add a space between sentences
Suggestion: There
...had covered exactly the quarter in 1990.There was no change in the popularity of the ...
^^^^^
Line 5, column 284, Rule ID: SENTENCE_WHITESPACE
Message: Add a space between sentences
Suggestion: Moreover
...he source of energy in both 80s and 90s.Moreover,both coal and nuclear plant had contrib...
^^^^^^^^
Line 5, column 292, Rule ID: COMMA_PARENTHESIS_WHITESPACE
Message: Put a space after the comma
Suggestion: , both
...e of energy in both 80s and 90s.Moreover,both coal and nuclear plant had contributed ...
^^^^^
Line 7, column 8, Rule ID: COMMA_PARENTHESIS_WHITESPACE
Message: Put a space after the comma
Suggestion: , it
...ere 27% and 10% respectively. Overall,it is evident that oil leads and hydroelec...
^^^
Line 7, column 55, Rule ID: WHITESPACE_RULE
Message: Possible typo: you repeated a whitespace
Suggestion:
...evident that oil leads and hydroelectric power lacks as the sources of energy in ...
^^
Line 7, column 113, Rule ID: COMMA_PARENTHESIS_WHITESPACE
Message: Don't put a space before the full stop
Suggestion: .
...he sources of energy in both 80s and 90s .
^^

Transition Words or Phrases used:
also, but, furthermore, if, moreover, second, secondly, so, well, apart from, in addition, as well as

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

Performance on Part of Speech:
To be verbs : 12.0 7.0 171% => OK
Auxiliary verbs: 0.0 1.00243902439 0% => OK
Conjunction : 7.0 6.8 103% => OK
Relative clauses : 6.0 3.15609756098 190% => OK
Pronoun: 7.0 5.60731707317 125% => Less pronouns wanted
Preposition: 27.0 33.7804878049 80% => OK
Nominalization: 3.0 3.97073170732 76% => OK

Performance on vocabulary words:
No of characters: 817.0 965.302439024 85% => OK
No of words: 164.0 196.424390244 83% => More content wanted.
Chars per words: 4.98170731707 4.92477711251 101% => OK
Fourth root words length: 3.57858190836 3.73543355544 96% => OK
Word Length SD: 3.58984086951 2.65546596893 135% => OK
Unique words: 84.0 106.607317073 79% => More unique words wanted.
Unique words percentage: 0.512195121951 0.547539520022 94% => More unique words wanted or less content wanted.
syllable_count: 241.2 283.868780488 85% => 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: 1.0 4.33902439024 23% => OK
Subordination: 0.0 1.07073170732 0% => More adverbial clause wanted.
Conjunction: 0.0 0.482926829268 0% => OK
Preposition: 4.0 3.36585365854 119% => OK

Performance on sentences:
How many sentences: 6.0 8.94146341463 67% => Need more sentences. Double check the format of sentences, make sure there is a space between two sentences, or have enough periods. And also check the lengths of sentences, maybe they are too long.
Sentence length: 27.0 22.4926829268 120% => The Avg. Sentence Length is relatively long.
Sentence length SD: 108.195810147 43.030603864 251% => The lengths of sentences changed so frequently.
Chars per sentence: 136.166666667 112.824112599 121% => OK
Words per sentence: 27.3333333333 22.9334400587 119% => OK
Discourse Markers: 16.8333333333 5.23603664747 321% => Less transition words/phrases wanted.
Paragraphs: 4.0 3.83414634146 104% => OK
Language errors: 18.0 1.69756097561 1060% => Less language errors wanted.
Sentences with positive sentiment : 6.0 3.70975609756 162% => OK
Sentences with negative sentiment : 0.0 1.13902439024 0% => More negative sentences wanted.
Sentences with neutral sentiment: 0.0 4.09268292683 0% => More facts, knowledge or examples wanted.
What are sentences with positive/Negative/neutral sentiment?

Coherence and Cohesion:
Essay topic to essay body coherence: 0.143327361166 0.215688989381 66% => OK
Sentence topic coherence: 0.076626678586 0.103423049105 74% => OK
Sentence topic coherence SD: 0.0495987898377 0.0843802449381 59% => OK
Paragraph topic coherence: 0.0914275319217 0.15604864568 59% => OK
Paragraph topic coherence SD: 0.0332400512021 0.0819641961636 41% => Paragraphs are similar to each other. Some content may get duplicated or it is not exactly right on the topic.

Essay readability:
automated_readability_index: 15.7 13.2329268293 119% => OK
flesch_reading_ease: 52.53 61.2550243902 86% => OK
smog_index: 11.2 6.51609756098 172% => OK
flesch_kincaid_grade: 12.6 10.3012195122 122% => OK
coleman_liau_index: 11.9 11.4140731707 104% => OK
dale_chall_readability_score: 7.96 8.06136585366 99% => OK
difficult_words: 31.0 40.7170731707 76% => More difficult words wanted.
linsear_write_formula: 12.0 11.4329268293 105% => OK
gunning_fog: 12.8 10.9970731707 116% => OK
text_standard: 12.0 11.0658536585 108% => OK
What are above readability scores?

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Rates: 56.1797752809 out of 100
Scores by essay e-grader: 5.0 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.