Investigations in statistical physics

Thirty years ago the wonderful Nuffield A Level Physics course had this experiment that is actually a good introduction to university level statistical physics. I've never really done it so I thought lockdown would be a good time. I set up an electron energy level diagram and put 6 electrons on the first level above the ground state.

 I rolled two dice. The number on the green one sends that electron up one level and the black die sends that numbered electron down one level.

 This is what the dice roll above does.

 I did 10 more dice rolls and this is where I got to for today.

There's going to be a lot more of this!