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Data source: Environmental Protection Agency
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Air quality in Greeley, Colorado correlates with...

VariableCorrelationYearsSys. Score
Associate Professor salaries in the USr=0.7713yrs172
Customer satisfaction with Twitterr=0.7210yrs156
Professor salaries in the USr=0.6513yrs154
Customer satisfaction with Nordstromr=0.5827yrs152
Customer satisfaction with NYTimes.comr=0.6320yrs152
Ticket sales for Colorado Rockies gamesr=0.5727yrs150
Exxon Mobil's stock price (XOM)r=0.5622yrs148
Visitors to SeaWorld Floridar=0.6215yrs147
Number of times 6 was a winning Mega Millions numberr=0.5419yrs139
Nielsen Ranking of Smallville Season Finaler=0.7210yrs136
Bachelor's degrees awarded in consumer sciencesr=0.8410yrs135
Liquefied petroleum gas used in Germany, Westr=0.7311yrs135
Visitors to Disneylandr=0.5515yrs134
Number of times 9 was a winning Mega Millions numberr=0.5119yrs134
Number of times 13 was a winning Mega Millions numberr=0.4922yrs134
Master's degrees awarded in Physical sciencesr=0.8210yrs132
Occidental Petroleum's stock price (OXY)r=0.4822yrs130
Liquefied petroleum gas used in Former Czechoslovakiar=0.6813yrs130
Jet fuel used in Germany, Westr=0.711yrs130
Patents granted to Googler=0.6811yrs129
Master's degrees awarded in Visual and performing artsr=0.7910yrs128
Popularity of the first name Kourtneyr=0.543yrs128
Total Points Earned by Barracuda Golf Championship Winnerr=0.6413yrs125
Assistant Processor salaries in the USr=0.513yrs122
The number of umpires and referees in Colorador=0.5620yrs120
Justin Verlander's season strikeout countr=0.5718yrs119
Average length of Deep Look YouTube videosr=-0.8610yrs118
The number of foresters in Colorador=0.5420yrs117
Visitors to Disney Worlds Magic Kingdomr=0.515yrs116
Total regular season games played by Nicklas Backstromr=0.5121yrs114
Number of active magazines in the United Statesr=0.5615yrs114
Google searches for 'how to get to antartica'r=0.5120yrs114
The number of janitors and cleaners in Colorador=0.5220yrs114
Average length of 'Be Smart' science YouTube videosr=-0.7911yrs112
Total length of Deep Look YouTube videosr=-0.810yrs112
Popularity of the first name Stormyr=0.4843yrs110
Popularity of the first name Courtlandr=0.4843yrs110
Consumption of dry whole milk productsr=0.4932yrs109
Google searches for 'best schools'r=0.4620yrs106
Google searches for 'best mousetrap'r=0.4520yrs105
Number of Atlantic Hurricanes each yearr=-0.6716yrs102
Average SAT score in mathr=-0.4833yrs102
The number of movies Zoe Saldana appeared inr=0.4724yrs98
The number of movies Seth Rogen appeared inr=0.4823yrs98
Worldwide Harry Potter Movies Revenuer=0.5211yrs96
Load Factor of US Carrier Flightsr=0.5120yrs92
Gasoline pumped in Germany, Westr=0.6311yrs90
Asthma attacks in American childrenr=-0.4523yrs88
MercadoLibre's stock price (MELI)r=-0.5816yrs88
The number of hosts and hostesses in restaurants in Colorador=0.5120yrs82
Total likes of MinuteEarth YouTube videosr=-0.7811yrs81
Bachelor's degrees awarded in Precision productionr=0.6710yrs80
Popularity of the first name Dominiquer=0.4743yrs78
Solar power generated in Moldovar=-0.958yrs76
Total Revenue of the NFL Teamsr=0.4720yrs76
The number of preschool teachers in Colorador=0.4920yrs70
How provocative SciShow Space YouTube video titles arer=0.6510yrs70
Popularity of the first name Stefanr=0.4743yrs68
Liquefied petroleum gas used in Solomon Islandsr=0.4534yrs66
Google searches for 'Taylor Swift'r=0.4618yrs64
The number of dining room and cafeteria attendants in Colorador=0.4920yrs60
Total likes of 3Blue1Brown YouTube videosr=0.469yrs60
Popularity of the first name Codir=0.4743yrs58
Total revenue generated by the National Hockey Leaguer=0.4817yrs55
Average length of Vihart's YouTube videosr=-0.7215yrs49
Popularity of the first name Amberlyr=0.4743yrs48
The number of waiters and waitresses in Colorador=0.4820yrs48
Popularity of the first name Allegrar=0.4743yrs38
The number of structural iron and steel workers in Colorador=0.4820yrs38
How clickbait-y OverSimplified YouTube video titles arer=0.737yrs38
Javier Mascherano's International Match Countr=0.4714yrs38
Solar power generated in Gabonr=-0.8410yrs32
Popularity of the first name Kelseyr=0.4643yrs26
The number of registered nurses in Colorador=0.4818yrs26
Average length of Extra History YouTube videosr=-0.7112yrs25
Gasoline pumped in Germany, Eastr=0.5111yrs22
Popularity of the first name Deandrer=0.4643yrs16
The number of dental hygienists in Colorador=0.4720yrs16
Solar power generated in Omanr=-0.839yrs10
Popularity of the first name Kelsier=0.4643yrs6
The number of museum conservators in Colorador=0.4719yrs6
Average length of Mark Rober YouTube videosr=-0.5913yrs4
Solar power generated in Eswatinir=-0.7912yrs-2
Popularity of the first name Deangelor=0.4643yrs-4
The number of university philosophy and religion teachers in Colorador=0.4620yrs-5
Average number of comments on OverSimplified YouTube videosr=-0.757yrs-6
Solar power generated in Mozambiquer=-0.8110yrs-12
Popularity of the first name Codier=0.4643yrs-14
The number of advertising sales agents in Colorador=0.4620yrs-15
Average length of OverSimplified YouTube videosr=-0.757yrs-16
Popularity of the first name Cortezr=0.4643yrs-24
The number of phlebotomists in Colorador=0.5511yrs-29
How clickbait-y 'Be Smart' science YouTube video titles arer=0.5711yrs-32
Popularity of the first name Chinar=0.4643yrs-34
The number of middle school teachers in Colorador=0.5413yrs-40
Popularity of the first name Kelsir=0.4543yrs-45
Popularity of the first name Chanelr=0.4543yrs-55
The number of legislators in Colorador=0.4616yrs-58
Popularity of the first name Alixr=0.4543yrs-65
Popularity of the first name Katlinr=0.535yrs-76
Popularity of the first name Merandar=0.534yrs-86


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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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