It would take some work for me to estimate the angles, distances and speed for z133. The speed is particularly difficult. If the camera started filming at z110, I would have a better idea of the speed at z133. Getting an estimate for the very beginning or end of the Zapruder film is a little tricky.

But there was enough distance from the sharp corner that I think the limousine probably got up to 10 mph by z133, the same speed as at z153. Apparently, a good motorcade speed when on a fairly straight road with still a good crowd on either side of the road, and you want to give the people a good look.

The angles and distances I got from some estimate I made about 15 years ago. I think those estimates are off some, but they would be roughly right. So here are my estimates

(theta) difference between the horizontal direction of travel of the limousine and the horizontal bearing from the shooter, I make as 31 degrees.

(delta) the vertical angle the shooter is looking down onto the target, I make as 32 degrees.

(gamma) the vertical angle the limousine is traveling down at, I assume is the average slope of Elm Street, 3 degrees.

V, the velocity of the limousine, I make as 10 mph, or 14.7 feet per second.

R, the 3D distance from the shooter to the limousine, I make as 119 feet.

So, when I plug in these numbers into my formula, I get 4.6 degrees per second.

This estimate makes sense. Certainly, the angular velocity of the target would be at its highest at z133, then would generally get less and less through z345, as the angles get smaller, and the distance gets larger (which lowers the angular velocity of the target).

As a caveat, my estimate at z133 of 4.6 degrees per second, is probably less accurate than my estimates for z153, z222 and z312, where I spent more time making accurate estimates, as much as my ability will allow in a reasonable amount of time. But still, I think it is a reasonably good estimate, to within about 0.3 degrees per second of error, I would guess.