\begin{tabular}{lrrrr}
\toprule
Comparison definition & Cells & Records & Certified & Mean regret \\
\midrule
Primary: shared lead week & 182 & 388 & 180 & 0.03 \\
Same departure time bins & 31 & 62 & 31 & 0.00 \\
Same first and last observation & 152 & 319 & 151 & 0.03 \\
Observation week 24 & 89 & 194 & 88 & 0.04 \\
Observation week 25 & 93 & 194 & 92 & 0.02 \\
\bottomrule
\end{tabular}