Fig. 4

a–f Distribution of health care resource variables per share of the population and area. Source: The Ministry of Health [6] and National Statistical Information Service of Mongolia [5]. Distributions of the three health care resource variables are visualized on a map, using the cluster analysis to highlight gaps. Differences among the provinces are visualized using red and green colors based on the distribution density. Red represents an inadequate distribution (≤ 1 per area unit), and green represents an adequate distribution. Yellow and orange, as transition colors between green and red, represent an average health care resource supply