The estimates shown for the Peers are the analyst estimates. The consensus analyst estimates are provided by S&P CapitalIQ.
Here is the explanation from the S&P Capital IQ Estimates documentation -
"Estimates data is a transparent, high-quality, standardized database of global, real-time financial forecasting measures [...] for public companies worldwide, and estimates based on the projections, models, analysis, and research of analysts, brokers, and the companies themselves. Estimates are sourced from research reports, research contributors and news releases."