LM324A Output Current in TI datasheet
One is specified at \$T_A=25^\circ\:\textrm{C}\$. The other is specified at \$0^\circ\:\textrm{C}\le T_A\le 70^\circ\:\textrm{C}\$. But I also now believe that the upper row of the sink specification for \$T_A=25^\circ\:\textrm{C}\$ and for \$V_O=2\:\textrm{V}\$ should be interpreted as a mistake on their part. That's in \$\textrm{mA}\$ and not in \$\mu\textrm{A}\$.

The person drawing lines for the tables messed up, is all.

Take a look at the OnSemi one and I think you will see that I'm right: LM324