Set font size of values numbers on the axis

Question

How do I set the font size for the values on both the x and y-axis?

I've looked around and I've only found ways to change the xlabel's size and ylabel's size, but I want the actual numbers below the axis to be bigger.

Answer 1

Small elaboration on bb2's answer, if you do not want to change the font face:

set xtics font ", 30"

And for tics on the yaxis:

set ytics font ", 30"

For both axis at the same time:

set tics font ", 30"