[m_for_monkey]

"Chrome has dropped 0.27 points"

Is this a joke? That graph looks like four straight (xkcd-style) horizontal lines.

[dbaupp]

Why would you expect to be able to see a deviation of 0.27 on a graph that goes from 0 to 60? That is a change less than 0.5%.

The numbers quoted aren't read from the graphs, but rather the graphs and the numbers are derived from a table of data.