Whoops! This is the link I thought I had posted, sorry bout that.
Caliber, load etc are listed top of the pic here.
It's a screen shot of the test run over Oehler's M43 Personal Ballistic Laboratory.
TOF2T indeed equals time of flight to target.
Fist column (Vel13) is velocity measured between the start screen (S1) and the stop screen (S3), at roughly 13'.
Second column (Prf) is a proof velocity measured between the second start screen (S2) and the same stop screen (S3). The FPS value is expressed as a +- number referenced to the velocity recorded from 4' spaced S1 and S3 screens. The proof chrono has a 2' spacing and is slightly less accurate and simply displays the difference in FPS it measured over or under the FPS reading under Vel13.
Vel-T = Velocity at target.
BC = Is the BC calculated from TOF (when using the acoustic target) or two range velocity when another set of screens are set up downrange instead.
Horz and Vert = shot deviation from absolute center of triangular acoustic target. If your target (POA) is not dead center of the acoustic target, these numbers are meaningless. Group size and radial SD under the target grid are helpfull.
Peak = Peak pressure, read to the thrird digit.
Area = Area under the curve
Rise = Rise time