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Data source: Environmental Protection Agency
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Air pollution in San Juan, Puerto Rico correlates with...

VariableCorrelationYearsSys. Score
Rain in Torontor=0.868yrs260
Hot days in Torontor=0.876yrs259
Solar power generated in United Kingdomr=0.7238yrs228
Geothermal power generated in Turkiyer=0.6938yrs224
Wind power generated in Swedenr=0.6639yrs220
Royal Caribbean Cruises' stock price (RCL)r=0.7821yrs209
Popularity of the first name Jolener=0.6542yrs199
Automotive recalls for issues with the Air Bagsr=0.6333yrs198
Popularity of the first name Myrar=0.6342yrs196
Popularity of the first name Irar=0.6342yrs196
Wind power generated in United Kingdomr=0.6934yrs190
Number of websites on the internetr=0.6928yrs187
Automotive recalls issued by Volkswagen Group of Americar=0.5642yrs182
Boeing's stock price (BA)r=0.7221yrs182
Valero Energy's stock price (VLO)r=0.7321yrs182
Solar power generated in United Statesr=0.6638yrs180
Automotive recalls issued by Mercedes-Benz USAr=0.5442yrs178
Automotive recalls issued by Hyundai Motor Americar=0.5737yrs178
Average number of comments on LEMMiNO YouTube videosr=0.8211yrs176
Automotive recalls issued by Keystone RV Companyr=0.6325yrs175
NCAA Men's Skiing champion's pointsr=-0.7142yrs174
The average number of likes on LEMMiNO YouTube videosr=0.7911yrs172
Popularity of the 'crying michael jordan' memer=0.7717yrs171
The number of Breweries in the United Statesr=0.6633yrs170
Automotive recalls for issues with the Electrical Systemr=0.5142yrs170
Total comments on Tom Scott's YouTube videosr=0.7614yrs170
Total solar power generated globallyr=0.6539yrs169
Popularity of the 'its wednesday my dudes' memer=0.7317yrs165
Google searches for 'President phone number'r=0.6819yrs162
Wind power generated in United Statesr=0.6539yrs159
University Lecturer salaries in the USr=0.6613yrs156
Median US Household Incomer=0.6132yrs154
Google searches for 'how to immigrate to canada'r=0.6219yrs154
Gender pay gap in the U.S.r=0.5832yrs153
Intel Corporation's annual revenuer=0.5736yrs152
Customer satisfaction with T-Mobiler=0.6517yrs152
Average SAT score in critical readingr=0.5233yrs152
Number of firearms manufactured in the USr=0.5636yrs151
Instructor salaries in the USr=0.6313yrs151
Google searches for 'flights to Antarctica'r=0.619yrs151
Lockheed Martin's stock price (LMT)r=0.721yrs150
Annual Revenue of Walt Disney Companyr=0.5632yrs150
Assistant Processor salaries in the USr=0.6213yrs150
Liquefied petroleum gas used in Ugandar=0.733yrs148
Los Angeles Dodgers' Win/Loss Percentage in National League West Divisionr=0.4942yrs146
Customer satisfaction with American Airlinesr=0.5328yrs145
American cheese consumptionr=0.6232yrs144
Popularity of the 'this is fine' memer=0.6917yrs144
US Sales of Artificial Christmas Treesr=0.7415yrs142
Butter consumptionr=0.6132yrs142
Wells Fargo & Company's stock price (WFC)r=0.6821yrs134
Average number of comments on Tom Scott's YouTube videosr=0.714yrs131
Popularity of the first name Roser=0.5942yrs130
RTX Corp's stock price (RTX)r=0.6821yrs124
Average length of Tom Scott's YouTube videosr=0.714yrs121
Google searches for 'i have the flu'r=0.6319yrs121
Popularity of the first name Warrenr=0.5942yrs120
Northrop Grumman's stock price (NOC)r=0.6721yrs112
Popularity of the first name Hughr=0.5942yrs110
Average length of minutephysics YouTube videosr=0.712yrs109
Wind power generated in Belgiumr=0.6735yrs108
U.S. Bancorp's stock price (USB)r=0.6721yrs102
Popularity of the first name Janer=0.5842yrs98
Solar power generated in Switzerlandr=0.6832yrs96
Total likes of Tom Scott's YouTube videosr=0.6714yrs96
Consolidated Edison's stock price (ED)r=0.6721yrs92
Popularity of the first name Barrettr=0.5842yrs88
Average number of comments on 'Be Smart' science YouTube videosr=0.6910yrs86
Renewable energy production in Cook Islandsr=0.6830yrs84
Markel's stock price (MKL)r=0.6821yrs82
Popularity of the first name Clyder=0.5842yrs78
Solar power generated in Cook Islandsr=0.6830yrs74
Total length of Tom Scott's YouTube videosr=0.6414yrs72
Popularity of the first name Leonr=0.5742yrs67
Wind power generated in Perur=0.7125yrs64
Total length of Steve Mould's YouTube videosr=0.6414yrs62
General Dynamics' stock price (GD)r=0.6721yrs58
Popularity of the first name Rosemaryr=0.5742yrs57
Gasoline pumped in Perur=0.6241yrs54
Total comments on Matt Parker's YouTube videosr=0.6412yrs50
Trip.com Group's stock price (TCOM)r=0.6919yrs48
Popularity of the first name Rolandr=0.5642yrs46
Wind power generated in Canadar=0.6730yrs43
Cigna's stock price (CI)r=0.6621yrs36
The average number of likes on SmarterEveryDay YouTube videosr=0.5916yrs36
Renewable energy production in Belarusr=0.6630yrs32
Popularity of the first name Drewr=-0.6642yrs28
Becton, Dickinson and Company's stock price (BDX)r=0.6621yrs26
The average number of likes on Tom Scott's YouTube videosr=0.5914yrs24
Solar power generated in Canadar=0.6630yrs22
Altria Group's stock price (MO)r=0.6521yrs14
Popularity of the first name Alysonr=-0.6342yrs14
Total likes of SmarterEveryDay YouTube videosr=0.5716yrs14
Nuclear power generation in Chinar=0.6630yrs12
Marriott International's stock price (MAR)r=0.6521yrs4
Wind power generated in Germanyr=0.6631yrs2
Constellation Brands' stock price (STZ)r=0.6521yrs-6
Wind power generated in Jordanr=0.6532yrs-8
Arch Capital Group's stock price (ACGL)r=0.6521yrs-16
Ryanair Holdings' stock price (RYAAY)r=0.6521yrs-26
3M Company's stock price (MMM)r=0.6421yrs-37


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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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