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Table 3

Minimum bit-rate per data set, given four different requirements.

Set Δσ < 0.1σV Δσ < 0.01σV σc < 1.1σI σc < 1.01σI

A 7 10 3 5
B 3 5 2
C 5 8 3 4
D 3 6 2 3

Notes. The second and third columns provide the minimum bit-rate for a differential error rms < 10% and 1% of Stokes V rms, respectively. Columns four and five provide the minimum bit-rate for an absolute noise change <10% and 1%, respectively.

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