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kolkata - O3 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 8-hr outdoor standard is 100; WHO 8-hr outdoor guideline is 100; box color corresponds to India AQI codeView the modeled forecasts, maps, time series, and source contributions @ http://www.indiaairquality.info