I think the answer is that the points plotted on the graph are about an hour apart, so it is entirely possible that the actual minimum lies in between two plotted points. The graph is just a representation of the last 24 hours.
I think the answer is that the points plotted on the graph are about an hour apart, so it is entirely possible that the actual minimum lies in between two plotted points. The graph is just a representation of the last 24 hours.