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The above graph shows the Cs137, Cs134, Pb210, and Be7 concentration in CRMN air filters from the Radiation Protection Bureau, ON, from 2009 to present. The entire data set can be found in nms_airborne_radioactivity_ssn_radioactivite_dans_air.csv. If you require a copy of this data in a specific accessible format, please contact us at hc.rpb-brp.sc@canada.ca.