Estimating the Critical Gap at ${96}^{th}$ and Zionsville Road. The top portion of a summary of gap

events $($following class example format$)$ is shown below. Eighty$-$eight right$-$turning vehicles accepted gaps.

Only the $54$ vehicles with the shortest gaps are included in the part of the table shown below.

A$.$ Fill in the empty cells in Columns $4$ and $5.$ Show your calculations for the row in which $t=5sec.$

B$.$ Estimate the critical gap to the nearest $0\mathrm{.}01sec.$ Show your calculations.