In LinkWare Stats, you will see a graph similar to that below:
What may seem strange at first, are the results from 250 MHz to 275 MHz. How can this be given the limit line stops at 250 MHz?
250.0 <= x < 275.0
In other words, these are records at 250 MHz exactly, no other frequency. If it wasn't done that way, a negative margin bar from -1 to 0 would include a 0.0 data point; which would be annoying.