Figure 3.

Graphical depiction of channel by channel SNR, computed as mean signal intensity divided by the SD of signal intensity over time (S = source position, D = detector position). Source–detector pairs with SNR > 50 are connected with green lines, while those with lower SNRs are connected with progressively darker lines. Sources or detectors with few or only bad connections (e.g., S16, D25) could be candidates for pruning. Regions of red colors indicate reduced sensitivity relative to other regions, as seen in the vicinity of sources S4 and S6.