We characterize the low frequency radio-frequency interference (RFI)environment at the Murchison Radio-astronomy Observatory (MRO), the locationselected for the low-frequency component of the Square Kilometre Array. Datawere collected from the BIGHORNS instrument, located at the MRO, which recordsa contiguous bandwidth between 70 and 300 MHz, between November 2014 to March2015 inclusive. The data were processed to identify RFI, and we describe aseries of statistics in both the time and frequency domain, including modelingof the RFI occupancy and signal power as a series of distribution functions,with the goal of aiding future scientists and operation staff in observationplanning.
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