My ability to articulate myself in English varies greatly from hour to hour so I could only write up a simple explanation at the time. Now I would say that the

My ability to articulate myself in English varies greatly from hour to hour so I could only write up a simple explanation at the time. Now I would say that the article lacks images explaining the concept. It particular I had trouble with understanding how the lines related to the minutes. The way they either line up or don't.