A data product for analyzing the equality of urban public facilities for SDG11.2.1, taking into account actual accessibility and real service population

The raw data of PM2.5 concentration comes from the air quality testing site, and the raw data is the real-time PM2.5 concentration data of Beijing in 2018, the unit is μg/m3.By constructing the dynamic spatio-temporal weighting matrix taking into account the “wind direction-wind speed-distance”, we established the regional PM2.5 refinement and assessment model for SDG11.6.2 indicators. By coupling the LUR and SDM models, an urban PM2.5 refinement and assessment model for SDG11.6.2 indexes taking into account the multidimensional dynamic and static factors was established to predict the regional PM2.5 concentration, and the final result was the PM2.5 concentration in μg/m3 at the grid scale.