This illustration shows a grid of time slots, with eight of them shaded. The x-axis begins at 0 and is numbered at each line of the grid in the following pattern: 0.5, 1.0, 1.5, 2.0. 2.5 ... 9.0, 9.5, 10.0. The y-axis is labeled at each cell of the grid, where the first cell is labeled f1, the next f2, etc. until f6. There is an ellipsis and the grid continues unlabeled. The shaded area occurs at f5 between 1.0 and 2.0, encompassing two cells of the grid. This continues downward through f4, f3, and f2, equaling eight shaded cells.