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Data source: Environmental Protection Agency
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Air quality in Rapid City, South Dakota correlates with...

VariableCorrelationYearsSys. Score
Petroluem consumption in Former Czechoslovakiar=0.948yrs314
Visitors to SeaWorld Floridar=0.815yrs189
Customer satisfaction with Nordstromr=0.6227yrs172
Petroluem consumption in Cubar=0.5537yrs149
Honda Motor Co.'s stock price (HMC)r=0.5922yrs146
Customer satisfaction with ABCNews.comr=0.5920yrs146
Shell's stock price (SHEL)r=0.5722yrs144
Occidental Petroleum's stock price (OXY)r=0.5622yrs142
Customer satisfaction with FOXNews.comr=0.6112yrs141
Customer satisfaction with Macy'sr=0.5816yrs140
Number of active magazines in the United Statesr=0.7215yrs138
The number of print binding and finishing workers in South Dakotar=0.7113yrs136
Customer satisfaction with NBCNews.comr=0.5220yrs136
Customer satisfaction with NYTimes.comr=0.5120yrs134
Burglary rates in the USr=0.4838yrs134
Automotive recalls issued by Nissan North Americar=-0.5838yrs132
Final match set count at Chennai Openr=0.5827yrs130
xkcd comics published about the internetr=0.6117yrs130
Burglaries in South Dakotar=0.4638yrs130
Hydopower energy generated in Gabonr=-0.637yrs130
Viewership count for Days of Our Livesr=0.4737yrs128
Master's degrees awarded in Visual and performing artsr=0.7910yrs128
Popularity of the first name Troyr=0.5238yrs126
Popularity of the first name Gerardr=0.5238yrs126
Average number of comments on SciShow Space YouTube videosr=0.5610yrs126
Average views of CGP Grey YouTube videosr=0.7213yrs123
How fun Deep Look YouTube video titles arer=0.7410yrs123
Highest Nielsen rating for a TV show each yearr=0.4736yrs122
Automotive recalls for issues with Service Brakes, Hydraulicr=-0.5338yrs122
The number of probation officers in South Dakotar=0.5619yrs121
Time Person of the Year's Age at Recognitionr=0.5229yrs120
Number of Public Library Members in the UKr=0.5912yrs118
Total viewership of the Aviva Premiership Rugby finalr=0.5914yrs116
The number of merchandise displayers and window trimmers in South Dakotar=0.5320yrs116
Google searches for 'facebook'r=0.5218yrs114
Total Points Earned by Barracuda Golf Championship Winnerr=0.5613yrs113
United States' Fruit Juice Export Volumer=0.5613yrs113
Google searches for 'daylight savings time'r=0.520yrs112
Google searches for 'Matt Parker'r=0.5217yrs112
xkcd comics published about sarcasmr=0.4917yrs112
SLB's stock price (SLB)r=0.5522yrs110
Cosmopolitan's annual advertising revenuer=0.668yrs110
Associates degrees awarded in Management information systemsr=0.6711yrs109
Popularity of the first name Brentonr=0.5138yrs109
Nielsen Ranking of Smallville Season Finaler=0.610yrs108
The distance between Neptune and the Sunr=0.4839yrs108
The distance between Neptune and Earthr=0.4839yrs108
The distance between Neptune and Mercuryr=0.4839yrs108
Amount spent on Pet Gifts on Valentine's Day in the USr=0.579yrs106
Kerosene used in Madagascarr=0.5137yrs98
Woodside Energy Group's stock price (WDS)r=0.5515yrs94
Total comments on CGP Grey YouTube videosr=0.5113yrs92
Kerosene used in Turkiyer=0.538yrs88
The number of university biological science teachers in South Dakotar=0.5318yrs84
Average number of comments on MinuteEarth YouTube videosr=0.5211yrs81
Google searches for 'xbox'r=0.4920yrs81
Suncor Energy's stock price (SU)r=0.4822yrs80
The distance between Neptune and the moonr=0.4839yrs78
Popularity of the first name Bradleyr=0.538yrs78
Hydopower energy generated in Taiwanr=0.4637yrs74
The number of medical assistants in South Dakotar=0.520yrs71
PG&E's stock price (PCG)r=0.4822yrs70
Total likes of Computerphile YouTube videosr=0.5111yrs70
Google searches for 'xkcd'r=0.4917yrs68
Popularity of the first name Kendrar=0.538yrs68
Liquefied petroleum gas used in Solomon Islandsr=0.534yrs64
Ecopetrol's stock price (EC)r=0.5315yrs60
The number of chemical technicians in South Dakotar=0.4920yrs60
Total comments on SciShow Space YouTube videosr=0.5110yrs58
Popularity of the first name Alisonr=0.538yrs58
Fossil fuel use in Bulgariar=0.4537yrs52
Telefónica's stock price (TEF)r=0.4822yrs50
Total views on CGP Grey YouTube videosr=0.6913yrs48
Popularity of the first name Anaisr=-0.6138yrs48
The number of financial examiners in South Dakotar=0.517yrs48
Kerosene used in Argentinar=0.4737yrs42
América Móvil's stock price (AMX)r=0.4722yrs38
Popularity of the first name Lashawnr=0.538yrs38
How trendy Matt Parker's YouTube video titles arer=0.6813yrs37
Kerosene used in Canadar=0.4538yrs30
Average number of comments on CGP Grey YouTube videosr=0.4813yrs27
Kerosene used in Mexicor=0.4735yrs20
Cenovus Energy's stock price (CVE)r=0.5114yrs16
Total comments on Casually Explained YouTube videosr=0.489yrs13
Kerosene used in North Korear=0.4637yrs10
Total likes of Casually Explained YouTube videosr=0.479yrs2
Kerosene used in Pakistanr=0.4637yrs0
How insightful CGP Grey YouTube video titles arer=0.6413yrs-9
Kerosene used in Portugalr=0.4538yrs-10
Kerosene used in Venezuelar=0.4637yrs-20
Average views of Numberphile YouTube videosr=0.6313yrs-20
The average number of likes on Steve Mould's YouTube videosr=-0.7315yrs-30
Gasoline pumped in Bulgariar=0.4537yrs-31
Kerosene used in Puerto Ricor=0.4537yrs-41
The average number of likes on Mark Rober YouTube videosr=-0.7413yrs-41
Jet fuel used in Venezuelar=0.4537yrs-51
Average views of minutephysics YouTube videosr=0.6213yrs-52
Total likes of Steve Mould's YouTube videosr=-0.7115yrs-62
Solar power generated in Gabonr=-0.8710yrs-70
Total comments on Steve Mould's YouTube videosr=-0.715yrs-73
Average length of Computerphile YouTube videosr=-0.7411yrs-83


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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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