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Data source: Environmental Protection Agency
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Air pollution in Lewiston, Maine correlates with...

VariableCorrelationYearsSys. Score
Kerosene used in U.S. Pacific Islandsr=0.9123yrs374
Jet fuel used in Rwandar=0.923yrs372
The number of veterinarians in Mainer=0.978yrs370
Extra Space Storage's stock price (EXR)r=0.946yrs318
Drenching rain in Sydneyr=0.937yrs299
S&P Global's stock price (SPGI)r=0.889yrs282
Marriott International's stock price (MAR)r=0.869yrs279
Rain in Sydneyr=0.97yrs264
Season rating of "Two and a Half Men"r=0.877yrs260
Google searches for 'Justin Timberlake'r=0.877yrs260
Google searches for 'spiderman'r=0.867yrs258
Equity Residential's stock price (EQR)r=0.869yrs249
US average milk-fat content of cream productsr=0.867yrs234
Biomass power generated in Panamar=0.7923yrs224
Jet fuel used in American Samoar=0.7923yrs191
The number of movies Amy Poehler appeared inr=0.8515yrs181
Number of times 7 was a winning Mega Millions numberr=0.779yrs164
Number of edits to the Wikipedia article for Thomas Edisonr=0.7310yrs160
Number of edits to the Wikipedia article for Tetrisr=0.7110yrs157
Number of times 15 was a winning Mega Millions numberr=0.719yrs154
Worldwide count of earthquakes with a magnitude between 8.0 and 9.9r=0.8311yrs152
Number of edits to the Wikipedia article for Arnold Schwarzeneggerr=0.6810yrs152
Google searches for 'takeout near me'r=0.856yrs151
Total U.S. grain export volumer=0.8210yrs149
Automotive recalls issued by Mack Trucksr=0.5623yrs148
Number of edits to the Wikipedia article for Hadesr=0.6510yrs148
Kerosene used in Romaniar=0.7523yrs145
US production of cream productsr=0.817yrs144
Craig Bellamy's appearances in matches for the Wales national teamr=0.7813yrs143
US dairy skim solids used to produce cream productsr=0.87yrs142
Automotive recalls issued by Keystone RV Companyr=0.5813yrs140
Average Cost of a 30-Second Ad Commercial during the Academy Awardsr=0.769yrs139
Gasoline Prices in the USr=0.6621yrs139
Popularity of the first name Elyser=0.7123yrs139
The number of movies Chris Evans appeared inr=0.8211yrs138
Annual book sales in the USr=0.759yrs136
Popularity of the first name Jolener=0.6923yrs136
The number of brokerage clerks in Mainer=0.748yrs135
Afghanistan's Estimated Opium Productionr=0.6821yrs134
US hotel industry's revenue per available roomr=0.7410yrs134
Number of edits to the Wikipedia article for Alexander Hamiltonr=0.639yrs134
Popularity of the first name Rockyr=0.6723yrs133
Total Sales at Clothing and Accessories Storesr=0.6319yrs132
Number of times 21 was a winning Mega Millions numberr=0.639yrs132
Number of edits to the Wikipedia article for Justin Trudeaur=0.637yrs132
U.S. Bancorp's stock price (USB)r=0.849yrs131
Worldwide revenue from Harley Davidson motorcyclesr=0.7110yrs130
Number of edits to the Wikipedia article for Charles IIIr=0.69yrs130
Annual US household spending on household furnishings and equipmentr=0.8111yrs128
Number of liposuctions performed on womenr=0.6414yrs126
Ana Ivanovic's WTA Finals playedr=0.786yrs126
US Shoe Store Salesr=0.6119yrs126
Assist Tackle Count by Champ Bailey in a Given Yearr=0.6712yrs126
Number of edits to the Wikipedia article for Big Birdr=0.579yrs125
Number of edits to the Wikipedia article for Barbra Streisandr=0.579yrs125
Number of edits to the Wikipedia article for Harvard Universityr=0.5610yrs125
Gender pay gap in the U.S.r=0.5621yrs124
Number of registered Honda motorcycles in the UKr=0.6511yrs124
US Sales of Artificial Christmas Treesr=0.747yrs124
Jet fuel used in U.S. Pacific Islandsr=-0.9223yrs124
The Allstate Corporation's stock price (ALL)r=0.849yrs121
Number of times 1 was a winning Mega Millions numberr=0.559yrs120
Number of times 17 was a winning Mega Millions numberr=0.558yrs120
Google searches for 'daylight savings time'r=0.837yrs119
UBS Group AG's stock price (UBS)r=0.839yrs110
Fossil fuel use in Germanyr=0.7320yrs102
The number of movies Idris Elba appeared inr=0.7515yrs101
The PNC Financial Services Group's stock price (PNC)r=0.839yrs100
Portion of all US dairy skim-solids allocated to the production of cream productsr=0.847yrs96
Jet fuel used in Estoniar=0.7519yrs91
Toyota Motor's stock price (TM)r=0.829yrs88
US average milk-fat content of cream productsr=0.847yrs86
Petroluem consumption in Liberiar=0.7123yrs79
HSBC Holdings' stock price (HSBC)r=0.829yrs78
Number of edits to the Wikipedia article for Morgan Stanleyr=0.569yrs74
Number of Registered Vehicles in the USr=0.5721yrs72
US production of whey products (net)r=0.6311yrs72
Moody's stock price (MCO)r=0.829yrs68
Number of edits to the Wikipedia article for Plutor=0.5410yrs67
Texas Rangers' American League West Division finish positionr=0.5423yrs65
Jet fuel used in Guinear=0.6823yrs64
US dairy skim solids used to produce whey productsr=0.6311yrs60
Wells Fargo & Company's stock price (WFC)r=0.819yrs56
Gasoline pumped in Sierra Leoner=0.6523yrs50
Morgan Stanley's stock price (MS)r=0.819yrs46
Liquefied petroleum gas used in Kiribatir=0.811yrs36
Thomson Reuters' stock price (TRI)r=0.818yrs36
M&T Bank's stock price (MTB)r=0.819yrs26
Jet fuel used in Macaur=0.7116yrs17
American Express Company's stock price (AXP)r=0.89yrs15
Electricity generation in Germanyr=0.6620yrs6
Barclays' stock price (BCS)r=0.89yrs5
Deutsche Bank Aktiengesellschaft's stock price (DB)r=0.799yrs-6
Electricity generation in Azerbaijanr=0.6519yrs-6
Wind power generated in Faroe Islandsr=0.6618yrs-16
Lam Research's stock price (LRCX)r=0.789yrs-18
Wind power generated in Germanyr=0.6420yrs-26
ORIX Corporation's stock price (IX)r=0.789yrs-28
Jet fuel used in Czechiar=0.6718yrs-37
Geothermal power generated in Russiar=0.6419yrs-48
Petroluem consumption in Czechiar=0.6618yrs-58


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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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