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Data source: Environmental Protection Agency
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Air quality in Columbus correlates with...

VariableCorrelationYearsSys. Score
Google searches for 'i have the flu'r=0.8620yrs356
Electricity generation in Kazakhstanr=0.8930yrs351
Electricity generation in Russiar=0.8730yrs348
Wind power generated in Japanr=0.8630yrs346
U.S. direct investment abroadr=0.8822yrs342
US milk fat used to produce yogurtr=0.8822yrs340
Ticket prices at North American movie theatersr=0.8522yrs338
US milk fat used to produce whey products (net)r=0.8722yrs338
US production of cheese (other than cottage cheese)r=0.8622yrs337
Economic output of Washington metro arear=0.8621yrs336
The number of forensic science technicians in Ohior=0.8620yrs335
The number of massage therapists in Ohior=0.8620yrs335
GMO use in cornr=0.8824yrs328
GMO use in corn grown in Ohior=0.8624yrs325
GMO use in cottonr=0.8823yrs324
Annual US household spending on telephone servicesr=0.8723yrs320
US household spending on rented dwellingsr=0.8623yrs318
US household spending on healthcarer=0.8623yrs318
US household spending on health insurancer=0.8623yrs318
Food spending in Ohior=0.8524yrs316
Annual US household spending on laundry and cleaning suppliesr=0.8523yrs316
Gasoline pumped in Kazakhstanr=0.8730yrs315
US milk fat used to produce cheese (excluding cottage cheese)r=0.8622yrs307
Biomass power generated in Slovakiar=0.8529yrs304
US milk fat used to produce sour creamr=0.8622yrs297
Wind power generated in Czechiar=0.8822yrs292
US dairy skim solids used to produce yogurt, nonfrozenr=0.8722yrs287
Wind power generated in Latviar=0.8526yrs281
US dairy skim solids used to produce cheese (other than cottage cheese)r=0.8622yrs276
Biomass power generated in Sloveniar=0.8623yrs270
US dairy skim solids used to produce sour creamr=0.8622yrs266
Petroluem consumption in Turks and Caicos Islandsr=0.8627yrs260
Customer satisfaction with Dillard'sr=0.8327yrs254
Automotive recalls for issues with the Electrical Systemr=0.743yrs249
Customer satisfaction with Appler=0.7928yrs249
Wind power generated in Venezuelar=0.9410yrs248
Hispanic cheese consumptionr=0.8626yrs248
Automotive recalls issued by BMW of North Americar=0.6543yrs246
Automotive recalls issued by Mercedes-Benz USAr=0.6443yrs244
Total number of automotive recallsr=0.6543yrs243
Automotive recalls issued by Hyundai Motor Americar=0.6737yrs243
Customer satisfaction with Southwest Airlinesr=0.7428yrs242
Wind power generated in Taiwanr=0.8522yrs237
Annual Revenue of Walt Disney Companyr=0.832yrs236
Total number of live births in Australiar=0.7443yrs235
Inflation in the USr=0.8131yrs234
Gender pay gap in the U.S.r=0.7732yrs232
Number of households headed by single fathers in the United Statesr=0.7732yrs230
Number of internet usersr=0.8124yrs230
Total Sales at Clothing and Accessories Storesr=0.7631yrs229
Number of Lawyers in the United Statesr=0.7134yrs229
Patents granted in the USr=0.6641yrs228
Jet fuel used in Sao Tome and Principer=0.8722yrs227
Portion of all US dairy skim-solids allocated to the production of cheese (other than cottage cheese)r=0.8722yrs227
Total Revenue of the NFL Teamsr=0.8420yrs227
Yearly Total Gross Income of US Farmsr=0.823yrs226
Patents granted in the USr=0.6641yrs226
The number of pharmacy technicians in Ohior=0.8320yrs226
USA Populationr=0.6543yrs222
Popularity of the first name Melodyr=0.7843yrs220
Popularity of the first name Charlier=0.7843yrs220
Popularity of the first name Grahamr=0.7843yrs220
Jet fuel used in Samoar=0.8622yrs216
US average dairy skim-solid content of cheese (other than cottage cheese)r=0.8622yrs214
Liquefied petroleum gas used in Maldivesr=0.8818yrs204
US average milk-fat content of yogurt, nonfrozenr=0.8522yrs202
Popularity of the first name Elliotr=0.7843yrs190
Popularity of the first name Geneviever=0.7843yrs180
Christmas Price Index in the United Statesr=0.7731yrs178
Hotdogs consumed by Nathan's Hot Dog Eating Competition Championr=0.6543yrs173
Popularity of the first name Elliottr=0.7843yrs170
US Shoe Store Salesr=0.7730yrs166
Biomass power generated in Qatarr=0.910yrs162
Adidas Group's Global Net Salesr=0.8323yrs161
Popularity of the first name Hudsonr=0.7843yrs160
US Wind Power Generation Capacityr=0.8123yrs156
Total employee count at Continental AGr=0.824yrs151
Popularity of the first name Coltr=0.7843yrs150
Intel Corporation's annual revenuer=0.7236yrs145
Popularity of the first name Beatricer=0.7843yrs140
Total budget of Marvel comic-based films releasedr=0.735yrs139
Number of Registered Vehicles in the USr=0.7432yrs134
Popularity of the first name Valentinar=0.7843yrs130
Number of firearms manufactured in the USr=0.7136yrs129
Average milk produced per cow in the USr=0.6243yrs120
Gasoline Prices in the USr=0.6933yrs120
Popularity of the first name Violetr=0.7843yrs120
Global plane crashesr=0.6443yrs115
Popularity of the first name Delilahr=0.7843yrs110
Fossil fuel use in Equatorial Guinear=0.7842yrs102
US production of yogurt, nonfrozenr=0.8422yrs99
US production of sour creamr=0.8422yrs89
Jet fuel used in Tanzaniar=0.842yrs82
US production of butterr=0.8222yrs76
Electricity generation in Equatorial Guinear=0.7742yrs70
US milk fat used to produce butterr=0.8222yrs66
Wind power generated in New Zealandr=0.8530yrs60
US production of dry milk products (net)r=0.8122yrs54
Biomass power generated in Polandr=0.7742yrs50
US dairy skim solids used to produce butterr=0.8222yrs44
US production of whey products (net)r=0.822yrs33


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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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