BAV99 forward voltage
The table has the max values for the Vf with that current, it's saying it will not be more than that value. The graph is probably showing a the average value you'll see, but some parts will be above or below that.
As for which value you use, it makes sense to account for what would be worst case for your design, if you're concerned about power dissipation, then taking the max Vf for a given If makes sense.