This is your personal experiment I might not be able to tell you the accurate results, because that depends on your personality and your personal life, but I have a theory to both the results and what would be the outcome for either of the results.

According to your experiment if you turned out to be an early bird , it mean studing early in morning made you concentrate more with less distractions , and with fresh mind you can understand topics more clearly, you can start your day early and utilize to more things.

If you turned out to be a night- Owl , you like the calmness and the silent atmosphere which help you focus more on studing and can go on for a long time , leaving no work to postpone for the next day .

Either way if you figure out what’s best for you, you can use these results not only for studying but also for your regular life assignments , making your work easy and managing your schedules accordingly.

I hope whatever result came out of your experiment worked out for you to achieve your goal. And also helped you have a good and healthy lifestyle.