deletions | additions       diff --git a/As_it_travels_on_the__.tex b/As_it_travels_on_the__.tex  index 7a14057..d6c725b 100644  --- a/As_it_travels_on_the__.tex  +++ b/As_it_travels_on_the__.tex 
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\subsection{Recovery Bias}  As it travels on the surface of the observational arena, a dust devil's pressure contour $P_{\rm min}$ carves out a long, narrow area $A(P_{\rm act}, \Gamma_{\rm act})$. If a barometer lies within that area, the devil will be detected, in principle. $A$ is given by   \begin{equation}