The two pie charts show the main sources of ennergy in the USA in the 1980s and 1990s .

Grammar and spelling errors:
Line 1, column 68, Rule ID: COMMA_PARENTHESIS_WHITESPACE
Message: Don't put a space before the full stop
Suggestion: .
... that about the years 1980 and the 1990s . It is the data colaborate energy of sou...
^^
Line 1, column 114, Rule ID: COMMA_PARENTHESIS_WHITESPACE
Message: Don't put a space before the full stop
Suggestion: .
...is the data colaborate energy of sources . Which is clearly and coherently respect...
^^
Line 1, column 161, Rule ID: COMMA_PARENTHESIS_WHITESPACE
Message: Don't put a space before the full stop
Suggestion: .
...h is clearly and coherently respectively . It can be seen that highest data was...
^^
Line 3, column 47, Rule ID: IN_1990s[1]
Message: The article is probably missing here: 'in the 1980s'.
Suggestion: in the 1980s
... be seen that highest data was from USA in 1980s in oil it incresed and energy of source...
^^^^^^^^
Line 3, column 99, Rule ID: COMMA_PARENTHESIS_WHITESPACE
Message: Don't put a space before the full stop
Suggestion: .
...oil it incresed and energy of sources 42 . Whereever the layest are was from in na...
^^
Line 3, column 127, Rule ID: BEEN_PART_AGREEMENT[1]
Message: Consider using a past participle here: 'been'.
Suggestion: been
...f sources 42 . Whereever the layest are was from in naturalgas this decreased finis...
^^^
Line 3, column 197, Rule ID: COMMA_PARENTHESIS_WHITESPACE
Message: Don't put a space before the full stop
Suggestion: .
...creased finished at energy of sources 26 . However in coal it decreased added at e...
^^
Line 3, column 200, Rule ID: SENT_START_CONJUNCTIVE_LINKING_ADVERB_COMMA[1]
Message: Did you forget a comma after a conjunctive/linking adverb?
Suggestion: However,
...ased finished at energy of sources 26 . However in coal it decreased added at energy of...
^^^^^^^
Line 3, column 258, Rule ID: COMMA_PARENTHESIS_WHITESPACE
Message: Don't put a space before the full stop
Suggestion: .
... decreased added at energy of sources 22 . But in nuclear power it down up and at ...
^^
Line 3, column 318, Rule ID: COMMA_PARENTHESIS_WHITESPACE
Message: Don't put a space before the full stop
Suggestion: .
...wer it down up and at energy of sorces 5 . To begin with an 1990s in oil it fell u...
^^
Line 3, column 335, Rule ID: EN_A_VS_AN
Message: Use 'a' instead of 'an' if the following word doesn't start with a vowel sound, e.g. 'a sentence', 'a university'
Suggestion: a
...d at energy of sorces 5 . To begin with an 1990s in oil it fell up and at energy o...
^^
Line 3, column 386, Rule ID: COMMA_PARENTHESIS_WHITESPACE
Message: Don't put a space before the full stop
Suggestion: .
... oil it fell up and at energy of sources . Whenever in coal it down up is added at...
^^
Line 3, column 389, Rule ID: SENTENCE_FRAGMENT[1]
Message: “Whenever” 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.
...l it fell up and at energy of sources . Whenever in coal it down up is added at 27 . Any...
^^^^^^^^
Line 3, column 431, Rule ID: COMMA_PARENTHESIS_WHITESPACE
Message: Don't put a space before the full stop
Suggestion: .
...enever in coal it down up is added at 27 . Anyway in nuclear power it exchanced an...
^^
Line 4, column 58, Rule ID: COMMA_PARENTHESIS_WHITESPACE
Message: Don't put a space before the full stop
Suggestion: .
... incrased and nuclear power is fell down . It did not changed hydroelectric power....
^^
Line 4, column 72, Rule ID: DID_BASEFORM[1]
Message: The verb 'did' requires the base form of the verb: 'change'
Suggestion: change
...nuclear power is fell down . It did not changed hydroelectric power. Energy of sorces i...
^^^^^^^
Line 4, column 122, Rule ID: COMMA_PARENTHESIS_WHITESPACE
Message: Don't put a space before the full stop
Suggestion: .
...droelectric power. Energy of sorces in 5 .
^^

Transition Words or Phrases used:
anyway, but, however, so, to begin with

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

Performance on Part of Speech:
To be verbs : 9.0 7.0 129% => OK
Auxiliary verbs: 1.0 1.00243902439 100% => OK
Conjunction : 8.0 6.8 118% => OK
Relative clauses : 3.0 3.15609756098 95% => OK
Pronoun: 13.0 5.60731707317 232% => Less pronouns wanted
Preposition: 33.0 33.7804878049 98% => OK
Nominalization: 0.0 3.97073170732 0% => More nominalizations (nouns with a suffix like: tion ment ence ance) wanted.

Performance on vocabulary words:
No of characters: 636.0 965.302439024 66% => OK
No of words: 146.0 196.424390244 74% => More content wanted.
Chars per words: 4.35616438356 4.92477711251 88% => OK
Fourth root words length: 3.47606760199 3.73543355544 93% => OK
Word Length SD: 2.44945661762 2.65546596893 92% => OK
Unique words: 72.0 106.607317073 68% => More unique words wanted.
Unique words percentage: 0.493150684932 0.547539520022 90% => More unique words wanted or less content wanted.
syllable_count: 197.1 283.868780488 69% => OK
avg_syllables_per_word: 1.3 1.45097560976 90% => OK

A sentence (or a clause, phrase) starts by:
Pronoun: 3.0 1.53170731707 196% => OK
Article: 1.0 4.33902439024 23% => OK
Subordination: 1.0 1.07073170732 93% => OK
Conjunction: 1.0 0.482926829268 207% => Less conjunction wanted as sentence beginning.
Preposition: 1.0 3.36585365854 30% => More preposition wanted as sentence beginning.

Performance on sentences:
How many sentences: 13.0 8.94146341463 145% => OK
Sentence length: 11.0 22.4926829268 49% => The Avg. Sentence Length is relatively short.
Sentence length SD: 20.7258806852 43.030603864 48% => The essay contains lots of sentences with the similar length. More sentence varieties wanted.
Chars per sentence: 48.9230769231 112.824112599 43% => More chars_per_sentence wanted.
Words per sentence: 11.2307692308 22.9334400587 49% => More words per sentence wanted.
Discourse Markers: 3.0 5.23603664747 57% => More transition words/phrases wanted.
Paragraphs: 3.0 3.83414634146 78% => More paragraphs wanted.
Language errors: 17.0 1.69756097561 1001% => Less language errors wanted.
Sentences with positive sentiment : 9.0 3.70975609756 243% => Less positive sentences wanted.
Sentences with negative sentiment : 0.0 1.13902439024 0% => More negative sentences wanted.
Sentences with neutral sentiment: 4.0 4.09268292683 98% => OK
What are sentences with positive/Negative/neutral sentiment?

Coherence and Cohesion:
Essay topic to essay body coherence: 0.117008057164 0.215688989381 54% => OK
Sentence topic coherence: 0.0445947500951 0.103423049105 43% => OK
Sentence topic coherence SD: 0.0478421011791 0.0843802449381 57% => OK
Paragraph topic coherence: 0.0685661499747 0.15604864568 44% => OK
Paragraph topic coherence SD: 0.0501715592527 0.0819641961636 61% => OK

Essay readability:
automated_readability_index: 4.7 13.2329268293 36% => Automated_readability_index is low.
flesch_reading_ease: 85.69 61.2550243902 140% => OK
smog_index: 3.1 6.51609756098 48% => Smog_index is low.
flesch_kincaid_grade: 4.0 10.3012195122 39% => Flesch kincaid grade is low.
coleman_liau_index: 6.82 11.4140731707 60% => Coleman_liau_index is low.
dale_chall_readability_score: 7.21 8.06136585366 89% => OK
difficult_words: 28.0 40.7170731707 69% => More difficult words wanted.
linsear_write_formula: 5.5 11.4329268293 48% => Linsear_write_formula is low.
gunning_fog: 6.4 10.9970731707 58% => Gunning_fog is low.
text_standard: 7.0 11.0658536585 63% => The average readability is low. Need to imporve the language.
What are above readability scores?

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Minimum 150 words wanted.

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.