Yes, I was confused again about the units! Mbps and I think at that time I had changed the sample rate to a value much higher. Just a note about the sample rate and jitter value:
I found that from looking at the high sample rate eye diagrams that a) they slightly change the position of the eye crossing and b) there is a better chance of a data point far outside the norm which can change the range measurement. Instead of the range you could try looking at the mean value and standard deviation. Using these you can find the variance of the data. (Square of the standard deviation)
Regards