2D contour plots of comp2 (y-axis) vs. comp1 (xaxis) for each of the four search spaces (rows) and each of the first five (out of a total of 10) seeded optimization runs are given in Figure . Only the first five are shown for brevity. The "comp-order" search space exhibits the greatest homogeneity between the five repeat campaigns compared with the other three search spaces ("comp", "order", and bounds-only), perhaps owing to the fact that it is the most compact representation of the four search spaces.