Time values for X and decimals for Y

Hello

I'm trying to create a chart using time values for X axes and for Y I'm going to use decimal values that will be temperatures. And example for values: X = 08:15 and Y = 15.4

I'm using and XML but I can't get right result yet. Could anybody help me? An example of data unit "<data unit="16:34:00" value="15.4"/>"

Thanks

I am having the same problem where if unit is a string in the xml it breaks the graph. Did you end up with a solution?