Read information from a labelled data matrix
\(P\) is a matrix recording the number of animals recorded during a wetland survey, with a row for each animal and a column for each pond
Rows, in order: Frogs, Turtles, Ducks
Columns, in order: Pond A, Pond B, Pond C
\[P = \begin{bmatrix} 5 & 1 & 12 \\ 4 & 5 & 11 \\ 11 & 3 & 3 \end{bmatrix}\]