Fig. 2: Daily characteristics of five indicators.
From: Use of temporal contact graphs to understand the evolution of COVID-19 through contact tracing data
a C(t), the daily total number of contacts between infectious and contacted individuals. S(t), the daily total number of contacted individuals who had encountered the infectious at least once. I(t), the daily total number of infectious individuals who had encountered with contacted individuals at least once. kS(t), the daily average number of infectious individuals that each susceptible individual encountered. kI(t), the daily average number of susceptible individuals that each infectious individual contacted. The error bar in this panel indicates the standard deviation of different time interval T in the contact model, which varies from 15 to 120 min. b The distributions p(k) of the daily number (k) of contacts by all contacted individuals and the distributions p(k) of the daily number (k) of contacts by all confirmed cases, respectively, on four specific days.
