Fig. 2From: Locating helicopter emergency medical service bases to optimise population coverage versus average response timeGreenfield MR-HEMS base locations for the MCLP and ARTM methods. a,b and c are the optimal MCLP solutions for 7, 8 and 9 bases respectively whereas d, e and f are optimal ARTM solutions for 7, 8 and 9 bases respectivelyBack to article page