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Table 3 GIS Variable Summary Statistics

From: Nitrogen dioxide concentrations in neighborhoods adjacent to a commercial airport: a land use regression modeling study

Variable/Type Mean Median (Range)
DISTANCE TO NEAREST ROAD CLASS (RI DOT)
Distance to nearest Class 1 Road (m) 1179.80 1291 (28 - 2221)
Distance to nearest Class 2 Road (m) 550.07 431 (9 - 1512)
Distance to nearest Class 3 Road (m) 377.70 283 (1 - 1261)
Distance to nearest Class 4 Road (m) 354.90 8 (0 - 372)
TRAFFIC DENSITY WITHIN VARIOUS RADII
Traffic Density within 100 m (vehicle-m/day/km 2 ) 37.39 1.5 (0 - 322.9)
Traffic Density within 200 m (vehicle-m/day/km 2 ) 31.09 1.5 (0 - 201.0)
Traffic Density within 300 m (vehicle-m/day/km 2 ) 28.42 1.6 (0 - 178.0)
Traffic Density within 400 m (vehicle-m/day/km 2 ) 27.64 7.8 (0 - 156.5)
DISTANCE TO AIRPORT-RELATED LOCATIONS
Airport Terminal (m) 1445.04 1454.0 (119 - 2724)
Runway 16/34 (m) 1051.36 1034.0 (68 - 2207)
Runway 5/23 (m) 704.46 649.0 (180 - 1774)
Airport Centroid (m) 1294.73 1245.0 (409 - 2483)
Airport Fence (m) 218.73 80.0 (0 - 1040)
TRAFFIC-RELATED VARIABLES
ADT-weighted road length within 100 m (vehicle-m/day) 1063186.46 0 (0 - 7649264)
ADT-weighted road length within 200 m (vehicle-m/day) 3375258.66 0 (0 - 24119141)
Length of Class 1 roads within 100 m (m) 4.10 0 (0 - 299)
Length of Class 1 roads within 200 m (m) 17.63 0 (0 - 705)
Length of Class 2 roads within 100 m (m) 23.56 0 (0 - 267)
Length of Class 2 roads within 200 m (m) 82.47 0 (0 - 749)
Length of Class 3 roads within 100 m (m) 32.93 0 (0 - 493)
Length of Class 3 roads within 200 m (m) 114.51 0 (0 - 999)
Length of Class 4 roads within 100 m (m) 281.97 276.0 (0 - 800)
Length of Class 4 roads within 200 m (m) 990.32 990.0 (0 - 2394)
Length of all roads within 100 m (m) 342.55 361.0 (0 - 890)
Length of all roads within 200 m (m) 1204.94 1174.0 (0 - 2891)