This theory of plate tectonics replaced the previous one of continental drift, where it was thought that just the continents themselves drifted over the earth's surface. Most of my research turned up theories and not hard experimental data and those measurements that I was able to obtain were averages or estimations. The numbers found in each source did not exactly agree with each other but their ranges were reasonably similar. I found the absolute velocities to some of the plates from one source. Unable to locate original text of the graph.
Velocities are relative to the Pacific plate.
Original table also had direction. Velocities are zero since these plates are not in contact with the Pacific plate. The relative and absolute velocities can be calculated using the Internet program but the coordinates are crucial, for very different results may be obtained if the coordinates are not correct. Due to various activity on different points on and below the earth's surface, the movement of one plate is not uniform. One plate can have many velocities depending upon the location.