This command selects as a parameter a constant lag, shifting data in time. The time lag is applied to the output that refers to a specific data set:
z(t) = zTOUGH2 (t + lag)
Here, t is time, lag is the estimated time lag in seconds, and zTOUGH2 is the TOUGH2 output. The result z is compared to the measurement z* of the corresponding data set. A single data set is identified by number using command >>> SET (p); multiple data sets a specified with command >>>> INDEX (p). If the lag is known, i.e., does not need to be estimated, use command >>>> SHIFT TIME, a subcommand of > OBSERVATION.
>>>> ANNOTATION: time lag
>>>> INDEX: 1 2 3
>>>> GUESS: 300 sec.