deletions | additions       diff --git a/As_can_be_seen_in__.tex b/As_can_be_seen_in__.tex  index 8fc4d5a..5417151 100644  --- a/As_can_be_seen_in__.tex  +++ b/As_can_be_seen_in__.tex 
...
As can be seen in Figure~\ref{fig:fermidirac} the probability falls to 50\% of the maximum at $\mu$. The width of the attenuation of the probability is defined by the $\sigma$ value, such that smaller $\sigma$ values mean that the probability falls off more quickly (still centred on $\mu$). If we say that $r=\mu/\sigma$ $r=\mu/\sigma$, and decide to define the distribution in terms of $\mu$ and $r$,  then we can empirically estimate the attenuation band as a function of this parameter. these parameters.  The band over which the probability falls from 97.5\% of the maximum value down to 2.5\% is given by $\mu \pm Zr\sigma^2/2$, Z\mu^2/2r$,  where $Z \approx 3.345$.