There's an app called Vibrometer (http://www.trishtech.com/2015/10/measure-earthquakes-at-home-with-vibrometer-app-for-android/), which is a tool for measuring vibrations. I have it installed on a tablet and when I hold out the tablet it gives me a reading on the degree of my postural tremors. For example, my wife, who is healthy, gets a reading of 0.8, whereas my reading can be anywhere from 10-12 on up to the low 30's. That's over a 300% difference in only an hour or two! For me, tremors seem to be stronger after doing physical exercise, like yoga or the exercycle.
So, two questions for those who have postural tremor (tremor when you hold out your hands at arm's length and spread your fingers):
1) Does your tremor vary greatly during the day?
2) If so, what does this variation seem to be due to?