Water flows over a sharp-crested triangular weir with \(\theta=90^{\circ}\). The head range covered is \(0.20 \leq H \leq 1.0 \mathrm{ft}\) and the accuracy in the measurement of the head, \(H\), is \(\delta H= \pm 0.01 \mathrm{ft}\). Plot a graph of the percent error expected in \(Q\) as a function of \(Q\).