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Data source: Environmental Protection Agency
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Air quality in Ashtabula, Ohio correlates with...

VariableCorrelationYearsSys. Score
Renewable energy production in The Bahamasr=0.9412yrs370
Solar power generated in The Bahamasr=0.9412yrs370
Google searches for 'i have the flu'r=0.8820yrs360
Realty Income's stock price (O)r=0.8622yrs357
Annual US household spending on health insurancer=0.923yrs354
Wind power generated in Polandr=0.8627yrs344
U.S. direct investment abroadr=0.8822yrs342
US milk fat used to produce cheese (excluding cottage cheese)r=0.8922yrs342
US Wind Power Generation Capacityr=0.8823yrs341
Ticket prices at North American movie theatersr=0.8622yrs340
US production of cheese (other than cottage cheese)r=0.8822yrs340
Economic output of Washington metro arear=0.8721yrs338
US dairy skim solids used to produce cheese (other than cottage cheese)r=0.8822yrs338
Patents granted to Appler=0.9312yrs338
The number of massage therapists in Ohior=0.8620yrs335
The number of court and municipal clerks in Ohior=0.8620yrs335
Adidas Group's Global Net Salesr=0.8523yrs334
Global annual electricity generationr=0.8718yrs334
The number of forensic science technicians in Ohior=0.8520yrs334
Patents granted to LG Electronicsr=0.9112yrs334
GMO use in cornr=0.8724yrs326
US per-person consumption of bottled waterr=0.924yrs325
GMO use in cottonr=0.8823yrs324
Annual US household spending on healthcarer=0.923yrs324
US household spending on health insurancer=0.923yrs324
Annual US household spending on poultryr=0.8923yrs322
Annual US household spending on rented dwellingsr=0.8923yrs322
US household spending on healthcarer=0.8923yrs322
Average views of Tom Scott's YouTube videosr=0.915yrs322
Annual US household spending on fresh fruitsr=0.8823yrs321
Annual US household spending on fresh vegetablesr=0.8823yrs321
Annual US household spending on laundry and cleaning suppliesr=0.8823yrs321
Restaurant spending in Ohior=0.8624yrs320
Annual US household spending on fruits and vegetablesr=0.8723yrs320
US Tree Nut Consumption per Personr=0.8722yrs318
Food spending in Ohior=0.8624yrs318
Grocery store spend in Ohior=0.8524yrs316
Wind power generated in Czechiar=0.8822yrs312
Cost to send a letter via the USPSr=0.8517yrs306
The average number of likes on Simone Giertz's YouTube videosr=0.8910yrs306
Biomass power generated in Indiar=0.8823yrs302
The number of OSHA specialists in Ohior=0.8519yrs302
Global Net Sales for Walmartr=0.8617yrs302
Biomass power generated in Lithuaniar=0.8921yrs292
US average milk-fat content of cheese (other than cottage cheese)r=0.8822yrs287
Gasoline pumped in Micronesiar=0.922yrs282
US Bottled Water Consumption per Personr=0.924yrs281
US average dairy skim-solid content of yogurt, nonfrozenr=0.8622yrs274
Hydopower energy generated in Greenlandr=0.8723yrs271
Annual US household spending on telephone servicesr=0.8723yrs270
US household spending on rented dwellingsr=0.8723yrs265
Wind power generated in Switzerlandr=0.8526yrs261
Annual US household spending on housekeeping suppliesr=0.8623yrs258
Annual US household spending on other household productsr=0.8623yrs253
Google searches for 'how to immigrate to canada'r=0.8320yrs252
Solar power generated in Bangladeshr=0.8525yrs250
The Walt Disney Company's stock price (DIS)r=0.8222yrs250
SAP SE's stock price (SAP)r=0.8422yrs249
Annual US household spending on medical suppliesr=0.8623yrs248
Revenue of US Broadcasting Industryr=0.8517yrs245
Annual US household spending on property taxesr=0.8523yrs241
Wind power generated in Tunisiar=0.8722yrs240
Annual Revenue of Walt Disney Companyr=0.7832yrs233
Google searches for 'buy a house'r=0.8520yrs230
Gasoline pumped in Comorosr=0.8724yrs229
Total Revenue of the NFL Teamsr=0.8520yrs228
Total NBA League Revenuer=0.8421yrs228
Dominion Energy's stock price (D)r=0.8422yrs219
Wind power generated in Moroccor=0.8622yrs218
Wind power generated in Taiwanr=0.8622yrs208
Unilever's stock price (UL)r=0.8322yrs208
Jet fuel used in Bhutanr=0.8525yrs197
Novartis AG's stock price (NVS)r=0.8222yrs196
Gasoline pumped in Palestinian Territoriesr=0.8525yrs187
Comcast's stock price (CMCSA)r=0.8222yrs186
Total employee count at Continental AGr=0.8224yrs180
US production of dry milk products (net)r=0.8422yrs179
Biomass power generated in Latviar=0.8521yrs176
U.S. Bancorp's stock price (USB)r=0.8222yrs176
US production of sour creamr=0.8422yrs169
Sales of LP/Vinyl Albumsr=0.7230yrs168
Ecolab's stock price (ECL)r=0.8222yrs166
Geothermal power generated in Francer=0.9111yrs165
US milk fat used to produce yogurtr=0.8422yrs159
Cognizant Technology Solutions' stock price (CTSH)r=0.8222yrs156
Geothermal power generated in Germanyr=0.8618yrs154
US production of butterr=0.8322yrs148
Fidelity National Information Services' stock price (FIS)r=0.8222yrs146
Liquefied petroleum gas used in Nigerr=0.8522yrs144
US milk fat used to produce butterr=0.8322yrs138
Eversource Energy's stock price (ES)r=0.8222yrs136
US milk fat used to produce sour creamr=0.8322yrs128
Hormel Foods' stock price (HRL)r=0.8222yrs126
US dairy skim solids used to produce dry milk productsr=0.8422yrs118
Becton, Dickinson and Company's stock price (BDX)r=0.8122yrs114
Sempra's stock price (SRE)r=0.8122yrs104
PPG Industries' stock price (PPG)r=0.8122yrs94
WEC Energy Group's stock price (WEC)r=0.8122yrs84
Illumina's stock price (ILMN)r=0.8122yrs74
Colgate-Palmolive Company's stock price (CL)r=0.822yrs63
3M Company's stock price (MMM)r=0.822yrs53


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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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