RCG: Possibly adjust duotone calc to correct some issues
in timing.c, xInc is getting truncated by integer division. Should be float.
Regression is a little offset to an early time because the 0 point is seventh out of 12 points used. Perhaps make it 7 out of 13 or 6th out of eleven. This probably has little effect on the calculation.
Increase resolution of DT on screen. Daniel suggests floating point, but there may be a problem changing types. I suggest x 1000 to get nanosec, but there may be a problem changing units. Must check if value in DAQ. If not,we can probably do whatever we want.