rowcolor truncating cells in table

Question

I am working on formatting a table a coauthor originally created for publication, and running into a problem when trying to color-code rows. The degree symbol in the first data row is formatted in an odd way (by using an extra column), and this is likely the source of error, but I am unsure of an alternative that accomplishes the same thing (columns aligned, degree symbol not part of alignment). Anyway, when I add a row color, the entries in the Mean and Max Error columns are truncated:

How can I get rid of this truncation while maintaining the current alignment?

documentclass{article}
usepackage[table]{xcolor}
begin{document}
begin{tabular}{l | r | r @{}l | r @{} l }
Name & Bits & Mean Error &  & Max Error &  
hline 
hline
A & 15 & $1.45262$&$^{circ}$ & $3.26743$&$^{circ}$  
hline
rowcolor{gray}
B & 16 & $0.37364$& & $1.29985$&  
C & 16 & $0.36114$& & $1.05603$&  
end{tabular}
end{document}

Bernard · Accepted Answer

Just insert an hphantom{^{circ}} like this:

documentclass{article}
usepackage[table]{xcolor}

begin{document}

begin{tabular}{l|r|r|r}
   Name & Bits & Mean Error  & Max Error   
   hline
   hline
   A & 15 & $1.45262^{circ}$ & $3.26743^{circ}$ 
   hline
   rowcolor{gray}
   B & 16 & $0.37364hphantom{^{circ}} $ &  $1.29985hphantom{^{circ}}$ 
   C & 16 & $0.36114hphantom{^{circ}}$ & $1.05603hphantom{^{circ}}$ 
end{tabular}

end{document}

Another solution, that will save typing lots of hphantoms and $...$:

begin{tabular}{l | r | r | r}
   Name & Bits & Mean Error  & Max Error   
   hline
   hline
   A & 15 & 1.45262rlap{$^{circ}$} & 3.26743rlap{ $^{circ}$} 
   hline
   rowcolor{gray}
   B & 16 & 0.37364  &   1.29985  
   C & 16 & 0.36114  &  1.05603

end{tabular}

F. Pantigny · Answer

The environment {NiceTabular} of nicematrix provides tools similar to those of colortbl but using PGF/Tikz for the drawing.
Using that environment, you have directly what you wish (but you need several compilations since nicematrix uses PGF/Tikz nodes).
documentclass{article}
usepackage{xcolor}
usepackage{nicematrix}
begin{document}
begin{NiceTabular}{l | r | r @{}l | r @{} l }[colortbl-like]
Name & Bits & Mean Error &  & Max Error &  
hline 
hline
A & 15 & $1.45262$&$^{circ}$ & $3.26743$&$^{circ}$  
rowcolor{gray}%
B & 16 & $0.37364$& & $1.29985$&  
C & 16 & $0.36114$& & $1.05603$&  
end{NiceTabular}
end{document}

rowcolor truncating cells in table

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