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Data source: Environmental Protection Agency
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Air quality in Great Falls, Montana correlates with...

VariableCorrelationYearsSys. Score
Kerosene used in Germany, Eastr=-0.9611yrs166
Visitors to SeaWorld Floridar=0.7315yrs164
Nuclear power generation in Swedenr=0.5242yrs152
Fossil fuel use in North Macedoniar=0.5930yrs151
Customer satisfaction with Whirlpoolr=0.5528yrs148
Customer satisfaction with FOXNews.comr=0.6512yrs147
Customer satisfaction with FedExr=0.5428yrs146
Asthma attacks in American childrenr=0.5223yrs142
Customer satisfaction with ABCNews.comr=0.5520yrs140
Customer satisfaction with Kohl'sr=0.5519yrs139
Asthma attacks in American childrenr=0.523yrs138
Total comments on Casually Explained YouTube videosr=0.659yrs138
Milk consumptionr=0.5632yrs136
Customer satisfaction with Walmartr=0.4827yrs136
Asthma attacks in American childrenr=0.4723yrs134
BP's stock price (BP)r=0.4922yrs134
Total comments on 3Blue1Brown YouTube videosr=0.629yrs134
Total likes of Casually Explained YouTube videosr=0.629yrs134
Telefónica's stock price (TEF)r=0.4822yrs130
Popularity of the first name Tessr=0.5243yrs130
Popularity of the first name Quintinr=0.5243yrs130
The divorce rate in Montanar=0.4623yrs130
Cigarette Smoking Rate for US adultsr=0.6121yrs128
NCAA Men's Skiing champion's pointsr=0.4643yrs128
Orange's stock price (ORAN)r=0.4722yrs128
Popularity of the first name Drewr=0.543yrs128
US production of fluid beverage milkr=0.5922yrs126
US dairy skim solids used to produce milk fat and skim solids byproduct fluid beverage milkr=0.622yrs126
Bankruptcy filings in the USr=0.5224yrs124
Google searches for 'shook'r=0.5820yrs124
xkcd comics published about the internetr=0.5617yrs123
Academy Awards Ceremony Audience Sizer=0.5523yrs122
Google searches for 'life insurance quotes'r=0.5620yrs122
Final match set count at Chennai Openr=0.5227yrs121
Number of Grand Slam Finals Played by Rafael Nadalr=0.5818yrs121
Emmy Awards Ceremony viewershipr=0.4536yrs120
National Lacrosse Champions' Final Pointr=0.5225yrs119
Gasoline pumped in Finlandr=0.543yrs118
US birth rates of triplets or morer=0.520yrs118
Lebron James' Regular Season Point Totalr=0.5519yrs118
US music album salesr=0.5616yrs116
Customer satisfaction with Rite Aidr=0.4816yrs116
xkcd comics published about pop culturer=0.517yrs114
Google searches for 'call of duty'r=0.520yrs112
The number of procurement clerks in Montanar=0.5120yrs112
The number of library assistants in Montanar=0.5120yrs112
Customer satisfaction with Dollar Generalr=0.4714yrs112
Sales of LP/Vinyl Albumsr=-0.630yrs110
Sales of Top-Selling Comic Book to North American Comics Shopsr=-0.7223yrs110
The number of hairdressers, hairstylists, and cosmetologists in Montanar=0.4920yrs110
Kerosene used in Indiar=0.4942yrs105
Vodafone Group's stock price (VOD)r=0.4722yrs98
Popularity of the first name Tatianar=0.4943yrs96
Total length of Casually Explained YouTube videosr=0.529yrs89
Sherbet consumptionr=0.5532yrs88
Popularity of the first name Kristianr=0.4943yrs86
Google searches for 'oprah winfrey'r=0.520yrs82
Total solar power generated globallyr=-0.5939yrs80
The number of postal service machine operators in Montanar=0.4920yrs80
Total length of LockPickingLawyer YouTube videosr=0.519yrs78
Popularity of the first name Quintonr=0.4843yrs74
Wind power generated in Chinar=-0.6532yrs70
Google searches for 'xkcd'r=0.517yrs70
Ice cream consumptionr=0.4932yrs69
Walmart's stock price (WMT)r=-0.6522yrs69
Average number of comments on 3Blue1Brown YouTube videosr=0.519yrs68
Nuclear power generation in Germanyr=0.5431yrs60
Total likes of Computerphile YouTube videosr=0.511yrs58
U.S. intercountry adoptionsr=0.4623yrs58
US production of cottage cheeser=0.4722yrs58
Google searches for 'panama canal'r=0.4720yrs58
Nuclear power generation in United Kingdomr=0.4742yrs50
Popularity of the first name Alexanderr=0.4843yrs50
Google searches for 'xbox'r=0.4720yrs48
Total comments on CGP Grey YouTube videosr=0.4813yrs47
Solar power generated in United Statesr=-0.638yrs40
Popularity of the first name Karlyr=0.4843yrs40
Average views of 3Blue1Brown YouTube videosr=0.79yrs36
Liquefied petroleum gas used in Australiar=0.4843yrs30
Popularity of the first name Markusr=0.4843yrs30
How cool SciShow Space YouTube video titles arer=0.6810yrs24
Popularity of the first name Estevanr=0.4843yrs20
Solar power generated in Austriar=-0.6729yrs18
How fun Vihart's YouTube video titles arer=0.6415yrs13
Popularity of the first name Alyssiar=0.4843yrs10
Nuclear power generation in Belgiumr=0.4642yrs8
The average number of likes on 3Blue1Brown YouTube videosr=0.489yrs3
Popularity of the first name Kaylanr=0.4843yrs0
Wind power generated in Norwayr=-0.6630yrs-2
How 'hip and with it' Matt Parker's YouTube video titles arer=0.6513yrs-8
Popularity of the first name Kendellr=0.4843yrs-10
Solar power generated in South Korear=-0.6432yrs-12
How professional-sounding 3Blue1Brown YouTube video titles arer=0.679yrs-18
Liquefied petroleum gas used in Japanr=0.4643yrs-24
How good CGP Grey YouTube video titles arer=0.6413yrs-29
Petroluem consumption in Germanyr=0.5132yrs-37
The average number of likes on Computerphile YouTube videosr=0.4511yrs-40
Gasoline pumped in Ukrainer=0.5230yrs-48
Total comments on Deep Look YouTube videosr=0.4510yrs-50
Gasoline pumped in Latviar=0.531yrs-60
Gasoline pumped in Sloveniar=0.531yrs-70


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You caught me! While it would be intuitive to sort only by "correlation," I have a big, weird database. If I sort only by correlation, often all the top results are from some one or two very large datasets (like the weather or labor statistics), and it overwhelms the page.

I can't show you *all* the correlations, because my database would get too large and this page would take a very long time to load. Instead I opt to show you a subset, and I sort them by a magic system score. It starts with the correlation, but penalizes variables that repeat from the same dataset. (It also gives a bonus to variables I happen to find interesting.)
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