Identification of supergranules (green crosses) in an example 8 h map of divergence-sensitive f-mode travel times computed at the equator, near disk center, using the method in Langfellner et al. (2015a). The x coordinate is in the east-west direction (positive towards west), the y coordinate is in the north-south direction (positive towards north). The gray-scale indicates the value of the divergence-sensitive travel times from which we derive the position of the supergranules. White indicates outflows, black inflows.