Using the following data compute the errors $($if any$)$ in the line of sight of a level, far rod only.

$\backslash$table$[[$@MRR A$,$a$,3\mathrm{.}865,$@P Distance A$,L_a,10],[$@MRR B$,$b$,2\mathrm{.}986,$@P L Distance B$,L_b,150],[$@ P RR A$,c,4\mathrm{.}358,,,],[$@PRR B$,d,5\mathrm{.}856,,,]]$

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