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kolkata - NO2 concentrations in μg/m3box plot = measured hourly avgs from all public continuous monitoring stationsribbon plot = WRF-CAMx model forecasted hourly avgs for 9 25kmx25km grids over the cityIndia 24-hr outdoor standard is 80; WHO 1-hr outdoor guideline is 200; box color corresponds to India AQI codeView the modeled forecasts, maps, time series, and source contributions @ http://www.indiaairquality.info