Which of the following is a correct statement?

From the given above question , we can say that
P, Q, R, S and T finished the work, working from Monday to Saturday, one of the days being a holiday, each working overtime only on one of the days.
R and T did not work overtime on the first day . P worked overtime the next day of the overtime day of S.
From given table it is clear that S worked overtime earlier than Q .