VMWare Performance graphs

Hello, I am fairly new to VMWare and have become a fan of the performance monitoring to keep tabs on things. For some reason the graphs this morning started appearing different with the line saturation. The actual graph points are directly in line with previous days, however the actual line on the graph is much more dense, like using a larger point pen. Is this a sign of additional load or why would VMWare just change the line weight from one day to another. I have a screenshot attached as an example.
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
In a 1 week overview chart, this is completely normal, and shows current (realtime), last day performance, so you can compare and contrast, with other previous days.

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