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Fig. 1


Dynamic spectra of 1.5 min of a LOFAR observation at high frequency and time resolutions (6 kHz and 0.5 s) with strong RFI, compressed to 8 bits per float with different kinds of normalization. Compression with per-row normalization increases the noise significantly in all channels. The RF and AF normalizations, which normalize the channels individually before encoding, behave more robust in the presence of RFI.

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