Great data! I appreciate your scientific method of mathematizing the data and then plotting that data on a graph.
My mom had no concept of “scientific method”.
If you asked her how many miles per gallon she got with her car, she would say ”Pretty good … I drove three weeks on a tank of gas”.
One day she was proud of the fact that she got a good deal on meat she purchased at the grocery store. When I asked her “What was the price per pound?” She just looked at me with a puzzled look on her face. I followed up with “Well, how do you know you got a good deal?”. She replied ”I just look at the size of the package, feel the weight of the package in my hand, and look at the total cost”. Sheesh!
She was an excellent cook. But she never used a cook book or a timer. One day she was in the living room, while frying some chicken on the kitchen stove for an unspecified period of time. She hopped out of her seat and announced that the chicken was ready to be turned. I asked “How do you know that”? She replied, “I can tell by the smell”.