The director of the Riley County, Kansas, library system would like to forecast evening patron usage for next week. Below are the data for the past 4 weeks: \begin{tabular}{lcccccc} \hline & Mon & Tue & Wed & Thu & Fri & Sat \\ \hline Week 1 & 210 & 178 & 250 & 215 & 160 & 180 \\ Week 2 & 215 & 180 & 250 & 213 & 165 & 185 \\ Week 3 & 220 & 176 & 260 & 220 & 175 & 190 \\ Week 4 & 225 & 178 & 260 & 225 & 176 & 190 \\ \hline \end{tabular} a) Calculate a seasonal index for each day of the week (enter your responses rounded to three decimal places). \begin{tabular}{lcccccc} \hline Day of the week & Mon & Tue & Wed & Thu & Fri & Sat \\ \hline Seasonal index & & & & & & \\ \hline \end{tabular}