You're a number freak! You probably want to see higher mileages and speeds and totals. The speadsheet works the same way a cycle computer works. It's biofeedback. (usually a motivator)
The one thing, I would advise to have a big "comment" column in your sheets, use the column to record, the conditions and feelings during a given days rides.
I use the comments column to remind me if there was wind or heat or other problems like flat tires.
If you're an old fart like me you can go look at logs from ten years ago and see how patheticly you compare now.
Feel better??