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0.450.30.10.15
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State
Number of polygons with Bortle scale 1
Number of polygons with Bortle scale 2
Number of polygons with Bortle scale 3
Total number of polygons
mean cloud cover (km^2 per polygon)
% Bortle 1% Bortle 2% Bortle 3
Total Bortle Class 1-3
Average cloud coverage %
Cloud coverage rankScore
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Alabama34022541245966257141.87384570.51%3.40%18.80%22.72%13.86%31.004.30
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Alaska22122901615435498194.84579736.23%8.17%17.34%31.74%11.30%7.007.64
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Arizona920212959493406272.432035382.70%6.25%17.47%26.42%6.70%1.007.37
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Arkansas70327071188959627141.68576641.18%4.54%19.94%25.66%13.40%24.005.72
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California100628971435411294188.198307910.89%2.57%12.71%16.17%8.37%3.005.67
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Colorado6311445383919228114.52635963.28%7.52%19.97%30.76%10.95%5.006.66
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Connecticut95831910576158.89072370.09%0.55%3.02%3.65%15.31%46.001.28
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Delaware0001670153.44708990.00%0.00%0.00%0.00%13.35%23.000.75
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Florida1320556034298227723143.35054190.58%2.44%15.06%18.08%15.20%45.003.77
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Georgia1096464129217152153145.07659770.72%3.05%19.20%22.97%14.15%35.003.83
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Hawaii2353618213444125.44516216.82%10.48%23.84%41.14%14.65%42.006.20
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Idaho5181031382214642140.95886013.54%7.04%26.10%36.68%11.77%10.006.86
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Illinois130423427328529162.23086780.46%1.48%14.98%16.92%14.69%43.002.63
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Indiana4577168322316167.13170580.20%0.35%7.54%8.09%14.45%40.001.30
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Iowa1561100522819314160.07496360.81%5.70%27.07%33.57%14.11%34.004.96
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Kansas15962914821036743127.46033834.34%7.93%22.34%34.62%11.82%12.006.92
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Kentucky3631200859736286160.61391891.00%3.31%23.69%28.00%15.44%47.003.85
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Louisiana750358516885110127148.18832830.68%3.26%15.33%19.27%13.67%29.003.95
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Maine41082123776418169.10929096.39%12.79%37.04%56.22%14.10%32.006.63
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Maryland73348197423286150.09229260.31%1.49%8.48%10.29%14.10%33.002.21
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Massachusetts
261437527430156.46526310.35%1.92%10.12%12.40%14.25%37.004.26
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Michigan6871601530632450175.64112372.12%4.93%16.35%23.40%14.27%38.004.91
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Minnesota6781989955238661160.6353211.75%5.14%24.71%31.61%12.52%18.005.07
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Mississippi1125509431184124161144.88362880.91%4.10%25.12%30.12%13.33%22.005.03
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Missouri7182558980434177147.51120122.10%7.48%28.69%38.27%13.51%26.005.86
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Montana68496625818603156.13774917.95%11.23%30.00%49.18%12.30%15.007.51
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Nebraska9911841495419337130.06377785.12%9.52%25.62%40.26%11.81%11.007.10
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Nevada3166221516550896.757761635.74%11.29%27.52%44.55%8.95%4.007.34
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New Hampshire
7129712063907174.20499131.82%7.60%30.87%40.29%12.96%20.005.09
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New Jersey00012487152.94686210.00%0.00%0.00%0.00%12.76%19.000.81
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New Mexico548124557942487783.918763492.20%5.00%23.29%30.50%7.87%2.007.10
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New York88425388127773174.96580320.32%1.53%13.97%15.82%14.34%39.002.70
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North Carolina223682829377498143.87368240.29%0.88%10.70%11.87%13.43%25.002.55
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North Dakota8211384325924442153.90114223.36%5.66%13.33%22.35%12.40%17.007.27
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Ohio109339348353265174.2493550.20%0.64%6.54%7.38%15.64%48.001.51
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Oklahoma159346361577766409127.41807632.40%6.98%23.76%33.14%11.92%13.006.08
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Oregon4541089270110982145.76778584.13%9.92%24.59%38.65%12.31%16.006.97
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Pennsylvania83486362328259176.00295040.29%1.72%12.82%14.83%15.71%49.002.55
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Rhode Island0011836150.31983030.00%0.00%0.05%0.05%14.49%41.000.56
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South Carolina76358602163748141.05785950.12%0.56%9.45%10.13%13.68%30.002.39
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South Dakota10311657307610946144.76935679.42%15.14%28.10%52.66%11.65%9.007.79
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Tennessee2821125783736784153.87452570.77%3.06%21.31%25.13%13.62%27.003.37
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Texas41521224662634395929124.07969681.05%3.09%15.82%19.96%12.08%14.005.36
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Utah365795256415446116.71032382.36%5.15%16.60%24.11%11.09%6.006.46
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Vermont11548511652835181.00698984.06%17.11%41.09%62.26%16.22%50.005.94
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Virginia244950781269781144.88544070.35%1.36%11.20%12.91%13.64%28.002.55
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Washington5911194410621799164.96410762.71%5.48%18.84%27.02%13.31%21.006.06
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West Virginia153656353617309170.4194670.88%3.79%20.43%25.10%15.20%44.004.42
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Wisconsin3521063605438246168.99101580.92%2.78%15.83%19.53%14.22%36.003.75
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Wyoming37090520587185131.23876255.15%12.60%28.64%46.39%11.40%8.007.65
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