.](d0.eps){width="000.00000%"}  ![Variable $X$ is the size of $I^0_i$; variable $Y$ is the size of the corresponding $(F-B)_0$ segment.](d0.eps){width="000.00000%"}  ![Variable $X$ is the size of $I^0_i$; variable $Y$ is the size of the corresponding $(F-B)_0$ segment.](d00.eps){width="000.00000%"}  ![Variable $X$ is the size of $I^0_i$; variable $Y$ is the size of the corresponding $(F-B)_0$ segment.](d00.eps){width="000.00000%"}  ![