A sample in GSadjust is a single observation (meter reading) at a station occupation. Usually any particular station occupation consists of several samples taken in relatively quick succession without moving the relative-gravity meter. For the Burris meter, the minimum interval between samples is 5 seconds if ambient noise is sufficiently low. For Scintrex meters, the interval is usually longer, about 60 seconds.
All of the samples at a station are displayed in the Data table, and plotted, on the Data tab.