Graph plot not correct

Brian, can you check please the graph on the main page. According to the graph, we have had 5.0mm of rain today, but the rainfall boxes on the left say 3.00mm.

Which one is correct? Have a look at :- http://www.workandplay.org.uk/todays_weather.htm and you will see what I mean.

As of now (5:50 PM on your site) I see the rain graph just over the 3mm mark (red scale on the left of the plot), not yet half way to 4mm, so 3 mm would seem to be the correct reading. I see that the graph is scaled 0, 3mm, 5mm, 8mm, 10mm, 13mm, so I’m guessing it is really 0, 2.5, 5, 7.5, 10 and the scale rounds up.

So I wonder if there is away that the scaling can be changed?