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Data source: Environmental Protection Agency
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Air quality in Madison, Wisconsin correlates with...

VariableCorrelationYearsSys. Score
Wind power generated in Venezuelar=0.9210yrs316
How good Deep Look YouTube video titles arer=0.8610yrs246
Total number of live births in Australiar=0.6643yrs223
Electricity generation in Colombiar=0.6342yrs219
Liquefied petroleum gas used in Macaur=0.6542yrs219
Average milk produced per cow in the USr=0.643yrs207
Total number of automotive recallsr=0.5643yrs200
Popularity of the first name Callier=0.6543yrs200
Popularity of the first name Reidr=0.6343yrs197
Popularity of the first name Hassanr=0.6343yrs197
Kerosene used in Malir=0.6542yrs189
US milk fat used to produce whey products (net)r=0.7522yrs186
USA Populationr=0.643yrs184
US Annual Tax Revenuer=0.5942yrs182
Automotive recalls issued by Chryslerr=0.5443yrs180
Liquefied petroleum gas used in Saudi Arabiar=0.6542yrs179
Intel Corporation's annual revenuer=0.6136yrs178
Automotive recalls issued by BMW of North Americar=0.5343yrs178
Total likes of SciShow Space YouTube videosr=0.8410yrs178
Automotive recalls for issues with the Power Trainr=0.5543yrs176
Automotive recalls for issues with the Electrical Systemr=0.5343yrs174
Automotive recalls issued by Hyundai Motor Americar=0.5437yrs174
Automotive recalls issued by Keystone RV Companyr=0.6225yrs174
Customer satisfaction with Southwest Airlinesr=0.6228yrs174
Customer satisfaction with Krogerr=0.6327yrs174
The average number of likes on AsapSCIENCE YouTube videosr=0.7812yrs171
Customer satisfaction with Appler=0.628yrs170
Muenster cheese consumptionr=0.6927yrs169
Liquefied petroleum gas used in Bhutanr=0.6442yrs168
Number of active magazines in the United Statesr=0.8215yrs168
Popularity of the first name Marleer=0.6343yrs167
Patents granted in the USr=0.5641yrs164
The number of pharmacy technicians in Wisconsinr=0.7520yrs164
Ticket prices at North American movie theatersr=0.7122yrs162
Hotdogs consumed by Nathan's Hot Dog Eating Competition Championr=0.5543yrs162
Budget for largest movie productionr=0.5543yrs160
Economic output of Washington metro arear=0.7221yrs160
Patents granted in the USr=0.5641yrs160
The number of dental hygienists in Wisconsinr=0.7320yrs160
Petroluem consumption in Sao Tome and Principer=0.6442yrs158
Total employee count at Continental AGr=0.6824yrs158
Popularity of the first name Reedr=0.6243yrs156
U.S. direct investment abroadr=0.6822yrs156
Yearly Total Gross Income of US Farmsr=0.6723yrs156
Super Bowl TV viewershipr=0.5833yrs156
Number of Lawyers in the United Statesr=0.5634yrs156
Automotive recalls issued by Nissan North Americar=0.4843yrs156
Customer satisfaction with Motorolar=0.6718yrs156
Total Revenue of the NFL Teamsr=0.6920yrs154
Automotive recalls issued by Porscher=0.4743yrs154
The number of medical assistants in Wisconsinr=0.6920yrs154
Automotive recalls issued by Mercedes-Benz USAr=0.4643yrs152
Customer satisfaction with Costcor=0.622yrs150
Customer satisfaction with Verizonr=0.6318yrs150
Petroluem consumption in Cook Islandsr=0.6342yrs146
Popularity of the first name Cainr=0.6243yrs146
Average number of comments on CGP Grey YouTube videosr=0.7713yrs140
Jet fuel used in El Salvadorr=0.6242yrs134
US milk fat used to produce yogurtr=0.7122yrs130
Total length of SciShow Space YouTube videosr=0.7610yrs126
Gasoline pumped in Samoar=0.6242yrs124
US production of yogurt, nonfrozenr=0.6722yrs114
Popularity of the first name Kalir=0.6243yrs106
Christmas Price Index in the United Statesr=0.6231yrs105
US production of sour creamr=0.6722yrs104
How professional-sounding The Game Theorists YouTube video titles arer=0.8115yrs104
Adidas Group's Global Net Salesr=0.6823yrs98
Popularity of the first name Tuckerr=0.6243yrs96
Annual Revenue of Walt Disney Companyr=0.5832yrs93
US production of cheese (other than cottage cheese)r=0.6622yrs92
Total comments on SciShow Space YouTube videosr=0.6710yrs92
Renewable energy production in Cameroonr=0.6242yrs88
Hollister retail store count worldwider=0.6523yrs87
Popularity of the first name Aliar=0.6243yrs86
US milk fat used to produce cheese (excluding cottage cheese)r=0.6622yrs82
Number of firearms manufactured in the USr=0.5436yrs78
Total likes of AsapSCIENCE YouTube videosr=0.6312yrs78
Total hydopower energy generated globallyr=0.6142yrs76
Popularity of the first name Mikar=0.6243yrs76
US milk fat used to produce sour creamr=0.6622yrs72
Renewable energy production in Canadar=0.6142yrs66
Popularity of the first name Coltonr=0.6143yrs64
US dairy skim solids used to produce yogurt, nonfrozenr=0.6722yrs62
Renewable energy production in Colombiar=0.6142yrs56
Popularity of the first name Levir=0.6143yrs54
US dairy skim solids used to produce cheese (other than cottage cheese)r=0.6622yrs50
Hydopower energy generated in Colombiar=0.6142yrs46
Popularity of the first name Nolanr=0.6143yrs44
US dairy skim solids used to produce sour creamr=0.6622yrs40
Electricity generation in Jordanr=0.6142yrs36
Popularity of the first name Genesisr=0.6143yrs34
Geothermal power generated in New Zealandr=0.6142yrs26
Popularity of the first name Vivianr=0.6143yrs24
Total geothermal power generated globallyr=0.642yrs14
Popularity of the first name Lilianar=0.6143yrs14
Biomass power generated in Austriar=0.642yrs4
Popularity of the first name Braxtonr=0.6143yrs4
Renewable energy production in Belizer=0.642yrs-6
Popularity of the first name Kaner=0.6143yrs-6
Popularity of the first name Ibrahimr=0.6143yrs-16
Popularity of the first name Chanar=0.6143yrs-26


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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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