Seems normal, but what's important as well is how the rhythm is, not just how rapid. You can have atrial fibrillation at rate 60 but that wouldn't be normal.
If you have a regular heart rate between 72 and 85 it would usually be normal, heart rate varies through the day, just as everything else in the body. HR will vary, BP will vary, heart contractility will vary. Like bbxx said, we are not machines and we're not operated by a CPU.
I don't quite understand why you register your heart rate/rhythm with a monitor every day. That can't be healthy, at least I would get obsessed with my heart rhythm if I did. Did your doctor tell you to do it? If not, you may want to consider to stop it, especially if you get worried, which will only contribute to increase your heart rate.
Take care.
I asked a cardiologist once why sometimes my heart is one thing resting and another time may be 20 points higher and he said I need to remember the humand body is not a machine. He assured me it was normal if 60-100
Based on the figures you provide, I'd say that you are well within the average parameters for pulse rates. As you know, our hearts are not metronomes, their "operation" varies greatly depending on the activity or other biological processes. IOW, relax, you're fine!