Hairs on the Top of My Head Are Thicker Than the Hairs on the Sides

I am an 18 year old male who’s hairline has receded recently. I would consider myself a Norwood 1.5 on one side but the other side still maintains its juvenile perimeter. Due to my paranoia, I recently attempted to initiate a homemade miniaturization test. I plucked a hair from the corner of my receding temple and from the vertex of my head and found the corner to be slightly thinner. I then proceeded to compare with hairs on the sides of my head and hairs on the sides of my vertex. I found them all to be thinner then the thick mane that runs through the dead center of my head all the way to the hairline.

My question is, is it normal to find hairs to be slightly thinner on sides and corners than the very top of head?

What you are doing on a one-hair-at-a-time basis, is what we do for a 1 square inch area that will clearly define your hair bulk and find out with accuracy if you have less bulk on the sides than on the top. You should have good numbers (metrics) put to your observations and then you will be able to tell what is happening. If what you’re noticing is confirmed by measurements, then I’m really at a loss.

What you’re describing is unusual and almost the opposite of genetic male pattern baldness (which would mean the top thins while the sides remain thick). An examination would be critical for me to draw any conclusions at all.