Fig 1.
The information of districts and EMS stations across Shanghai.
Fig 2.
Research Framework.
Fig 3.
Multiperiod EMS accessibility in Shanghai.
Fig 4.
Multiperiod EAI population coverage rate in Shanghai.
Table 1.
Multiperiod PRT of each district across Shanghai.
Fig 5.
The 9 min, 12 min, 15 min EAI population coverage rates across each district in Shanghai.
(a) EAIs population coverage rate during 00:00. (b) EAIs population coverage rate during 18:00.
Fig 6.
The Theil indexes for four sets of EMS accessibility indicators.
(a) The Theil indexes for PRT. (b) The Theil indexes for EMS optimal rate. (c) The Theil indexes for EMS standard rate. (d) The Theil indexes for EMS basic rate.
Fig 7.
Partitioning results based on two cost-allocation methods.
(a) Accumulated results and the corresponding tessellation polygon boundary based on the mean spatial cost. (a1) Fitting performance of the Mean Cost Accumulation Model. (b) Cost accumulation results and MCR-derived boundaries based on heterogeneous spatial costs. (b1) Fitting performance of the Heterogeneous Cost Accumulation Model.
Fig 8.
Multiperiod shortest-time service range, resource demand, and PRT of each EMS station.
(a) The shortest-time service range and resource demand of each EMS station. (b) The PRT of each EMS station.
Fig 9.
The EMS resource demand and PRT of each EMS station.
(a) The EMS resource demand. (b) The PRT of each EMS station.
Fig 10.
The 12 min, 15 min EAI overlap frequency.
(a)The 15 min EAI overlap frequency (b)The 12 min EAI overlap frequency.