Fig. 2: Age-mixing patterns by setting.
From: Inferring high-resolution human mixing patterns for disease modeling

Each heatmap represents the average frequency of contact between an individual of a given age (x axis) and all of their possible contacts (y axis). a Matrices of household contacts by age at the national level for China, the United States, and India. The six smaller panels in the center and on the left show household contact matrices at the subnational level in two provinces of China (Beijing, Guizhou), two locations of the United States (the state of New York and the District of Columbia), and two states of India (Maharashtra, Meghalaya). b Matrices of school contacts by age at the national level (from top to bottom: China, the United States, India). c Matrices of work contacts by age at the national level (from top to bottom: China, the United States, India).