Monitoring Your Blood Pressure

I recently stopped taking beta blockers after a consultation with my Doctor. Seven weeks on and I feel substantially better without them. I strongly advocate prescription reviews, as often the medication you’re taking does not necessarily need to be taken indefinitely. That was certainly the case with me and beta blockers. At the end of my last consultation, my GP asked me to keep a daily record of my blood pressure for a month. I could either do this at home or come into the surgery where there is a suitable device that is free to use. Fortunately I inherited an old but functional OMRON blood pressure monitor from my parents, so I was able to take readings each morning myself. It was while doing this for a month that it struck me; what exactly does all the data that I’m making note of mean exactly? What do systolic and diastolic mean and what is the difference between them? Also, where my readings good or bad?