"Shots #71378 and #71384 are part of a rho* scan experiment with nu* and beta
held constant but IP and Bt changed by a factor of 2 to hold q constant. In
shot 71378a, because of the lower density, the equilibrium has been shifted
upward about 37 cm to give a beam heating deposition profile more similar to
that of #71384. Shot 71378b has a time chosen after the discharge was
recentered in the vessel and thus has a power deposition profile more peaked on
axis like that of 71384. Shot 71378a and 71378b can be compared to study the
impact of different heat deposition profiles."

Indeed, on the file server discharges 71378a and 71378b are considered two different discharges
each having its radial profiles provided at one time slice.