This sounds super interesting and I'd love to participate if possible. I've been tracking my blood pressure daily for a couple of months now using the BP Companion app on my iPhone, and it's amazed me how variable it is - I've been able to reduce my systolic pressure by ~30 points by just relaxing.
This initiated a conversation with my S.O. about how that's not really representative of my general or average BP (which would, presumably, be the factor that corresponds to health). So as Eric mentioned above, how often should I measure my BP to be able to remove these type of variables.
I'm also super tall, and I wonder if that has some influence on my BP..