From: Measuring geographic access to health care: raster and network-based methods
Travel speed (mph)
Network %
Raster %
Difference
20
30.78
38.92
8.14
30
5.99
0.36
-5.63
40
40.75
49.33
8.58
50
19.73
11.20
-8.53
65
2.76
0.19
-2.57