deletions | additions       diff --git a/scattering part3.tex b/scattering part3.tex  index 5caec17..bc0dd39 100644  --- a/scattering part3.tex  +++ b/scattering part3.tex 
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Figure \ref{fig:scattering_timescales} shows the best-case scattering broadening as a function of DM for a range of SKA1 observing frequencies. The point at which the scattering timescale exceeds the timescale implied by new versions of SKA1-SYS\_REQ-2961 and SKA1-SYS\_REQ-2962 (see above) ultimately determines the maximum DM that must be corrected by the SKA PST via phase-coherent dispersion removal. Beyond this DM, the computational cost of coherent dedispersion can be decreased by increasing the number of frequency channels into which the signal is divided \cite{van_Straten_2011} divided.