In George and Hwang's The 52-Week High and Momentum Investing paper, some of the numbers don't match, is it a mistake?

\begin{tabular}{llcc} \hline \multicolumn{4}{c}{ Panel A } \\ PortfoliosClassifiedbyJegadeeshandTitmansMomentumStrategy & PortfolioClassifiedby52-WeekHigh & Ave.MonthlyReturn & Ave.MonthlyReturnExcludingJanuary \\ \hline Winner & Winner & 1.63% & 1.41% \\ & Loser & 1.17% & 0.31% \\ Middle & Winner - Loser & 0.46%(2.15) & 1.11%(6.11) \\ & Winner & 1.30% & 1.10% \\ & Loser & 1.04% & 0.24% \\ Loser & Winner - Loser & 0.26%(1.33) & 0.86%(6.28) \\ & Winner & 1.27% & 1.04% \\ & Loser & 1.05% & 0.01% \\ & Winner - Loser & 0.56%(1.62) & 0.98%(3.13) \\ \hline \end{tabular}