Using the measured rainfall data for $R=10$ years below,

Determine the $10-$year IDF curve equation based on the following empirical model. Using

Excel, plot the actual data points and the empirical model. Provide comments on the model

performance.

$i=\frac{a}{(t_d+b{)}^1}$

where i and $t_d$ represent the average intensity $[$in$/$hr$.]$ and storm duration $[$min$.]$