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

VariableCorrelationYearsSys. Score
Biomass power generated in Zambiar=0.8222yrs228
Google searches for 'how to make baby'r=0.8220yrs226
Hydopower energy generated in Greenlandr=0.823yrs226
Biomass power generated in Indiar=0.823yrs226
US household spending on rented dwellingsr=0.8123yrs206
US household spending on healthcarer=0.8123yrs206
US household spending on health insurancer=0.8123yrs206
Enbridge's stock price (ENB)r=0.7422yrs204
Popularity of the first name Lakenr=0.739yrs204
US average dairy skim-solid content of yogurt, nonfrozenr=0.8122yrs202
Customer satisfaction with Dillard'sr=0.6827yrs202
US average milk-fat content of yogurt, nonfrozenr=0.822yrs200
Google searches for 'cute cats'r=0.8220yrs196
Google searches for 'how to make baby'r=0.8220yrs196
Biomass power generated in Nigeriar=0.822yrs194
Customer satisfaction with TJ Maxxr=0.8514yrs194
US dairy skim solids used to produce yogurt, nonfrozenr=0.7922yrs190
UK Service Retail Price Indexr=0.819yrs188
U.S. direct investment abroadr=0.7522yrs187
The number of electrical engineers in Alabamar=0.7720yrs186
The number of pharmacists in Alabamar=0.7620yrs186
Biomass power generated in Papua New Guinear=0.822yrs184
Number of websites on the internetr=0.6728yrs184
Automotive recalls issued by Toyotar=0.6923yrs182
Number of times 14 was a winning Mega Millions numberr=0.722yrs181
Fomento Econ's stock price (FMX)r=0.7222yrs181
Gilead Sciences' stock price (GILD)r=0.7222yrs181
Wind power generated in Tunisiar=0.822yrs174
GMO use in cornr=0.7424yrs172
Automotive recalls for issues with the Air Bagsr=0.5933yrs172
Customer satisfaction with Southwest Airlinesr=0.6128yrs172
GMO use in cottonr=0.7523yrs170
Customer satisfaction with Delta Airlinesr=0.5928yrs169
Viewership count of American Idol Season Finaler=-0.8121yrs168
China's Annual Passenger Car Productionr=0.7918yrs168
The average number of likes on CGP Grey YouTube videosr=0.7513yrs168
Total comments on MinuteEarth YouTube videosr=0.7611yrs167
US household spending on fresh fruitsr=0.7523yrs166
Popularity of the 'chuck norris' memer=0.7318yrs166
Annual US household spending on telephone servicesr=0.7423yrs165
Annual US household spending on health insurancer=0.7423yrs165
Google searches for 'scooby doo where are you'r=0.8120yrs164
Popularity of the first name Marar=0.6143yrs164
The number of cement masons and concrete finishers in Alabamar=-0.8320yrs164
Petroluem consumption in Micronesiar=0.822yrs162
Total annual sales revenue of Ford Motors in Canadar=0.7419yrs162
US milk fat used to produce yogurtr=0.7722yrs158
Total likes of Computerphile YouTube videosr=0.711yrs158
Total employee count at Continental AGr=0.6724yrs157
US Wind Power Generation Capacityr=0.6823yrs156
Gasoline pumped in Micronesiar=0.822yrs152
Google searches for 'headache remedies'r=0.820yrs152
Biogen's stock price (BIIB)r=0.7122yrs150
US production of whey products (net)r=0.7622yrs147
Renewable energy production in Cabo Verder=0.7329yrs141
Google searches for 'two day shipping'r=0.7820yrs140
CVS stock price (CVS)r=0.6822yrs138
US dairy skim solids used to produce whey productsr=0.7622yrs136
The number of chemical equipment operators and tenders in Alabamar=0.7420yrs132
Liquefied petroleum gas used in Latviar=0.7231yrs128
Google searches for 'numberphile'r=0.7720yrs128
Simon Property Group's stock price (SPG)r=0.722yrs128
The number of insurance claims adjusters in Alabamar=0.7220yrs120
Altria Group's stock price (MO)r=0.6722yrs114
Blue cheese consumptionr=0.7127yrs112
The number of customer service representatives in Alabamar=0.7320yrs110
Google searches for 'i have the flu'r=0.7120yrs109
Dominion Energy's stock price (D)r=0.6722yrs104
Muenster cheese consumptionr=0.7127yrs102
The number of psychiatric aides in Alabamar=0.7220yrs99
Google searches for 'i cant even'r=0.6920yrs96
Coterra Energy's stock price (CTRA)r=0.6722yrs94
Biomass power generated in Rwandar=0.7822yrs92
Average milk produced per cow in the USr=0.543yrs92
The number of registered nurses in Alabamar=0.7218yrs87
Biomass power generated in Ugandar=0.7822yrs82
Bristol-Myers Squibb's stock price (BMY)r=0.6522yrs80
Google searches for 'google'r=0.7620yrs76
US average milk-fat content of whey products (net)r=0.7422yrs71
Wind power generated in Bulgariar=0.818yrs70
Colgate-Palmolive Company's stock price (CL)r=0.6522yrs70
Google searches for 'matt levine'r=0.7520yrs65
US production of yogurt, nonfrozenr=0.7122yrs60
Biomass power generated in Latviar=0.7621yrs58
Anheuser-Busch InBev's stock price (BUD)r=0.7714yrs56
Google searches for 'President phone number'r=0.6720yrs51
US production of sour creamr=0.7122yrs50
Biomass power generated in Romaniar=0.730yrs48
Google searches for 'Numberphile'r=0.7417yrs40
Warner Bros. Discovery's stock price (WBD)r=0.7118yrs40
Petroluem consumption in Timor-Lester=0.819yrs38
US production of cheese (other than cottage cheese)r=0.722yrs38
Google searches for 'best breed of dog'r=0.7120yrs29
US milk fat used to produce cheese (excluding cottage cheese)r=0.722yrs28
Wind power generated in Falkland Islandsr=0.7522yrs27
Google searches for 'how to hide a body'r=0.6520yrs18
Gasoline pumped in Timor-Lester=0.7919yrs17
US production of dry milk products (net)r=0.6922yrs16
Solar power generated in Czechiar=0.729yrs6
US dairy skim solids used to produce cheese (other than cottage cheese)r=0.722yrs6
Solar power generated in Germanyr=0.6831yrs-4


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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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