Synthetic Si IV 1394 Å line profiles in Cases 3 and Case 5 taken along different lines of sight (left panel and right panel, respectively). The Si IV line profiles are integral over the whole region shown in the Fig. 9. Black, purple, blue, cyan, green, and red curves represent the line profiles taken along different lines of sight. The angles between the lines of sight and the vertical direction (y-direction) are 0°, 15°, 30°, 45°, 60°, and 75°, respectively. The dashed arrow represents the x-axis of the computation domain, and the solid arrows with different colors indicate the directions of lines of sight taken for calculating the Si IV line profiles shown with the same colors.