Accessibility Assessment of Prehospital Emergency Medical Services considering Supply-Demand Differences

Figure 4

The geographic patterns of spatial access index (SPAI) with different impedance coefficients. (a) β = 10. (b) β = 25. (c) β = 40. (d) β = 55. (e) β = 70. (f) β = 85.

(a)

(b)

(c)

(d)

(e)

(f)