An N/A is generated in the log file if a sample was sent out but hasn't yet responded when a set up samples are written to the log file. To reduce the likelyhood of this happening, you could reduce the time Ping Plotter waits for a response (Packet Options, Timeout Speed).<br><br>An * is a lost packet. This is a packet that didn't return within the time specified in "Timeout speed".<br><br>A gray line is a period in which Ping Plotter wasn't sending packets, so it doesn't expect any responses. This happens when you pause and then restart. It can also happen if a route changes and a router isn't used for a period, and then the route changes back and it is used.<br><br>