I'm trying to create a chart in Excel with uneven steps between horizontal
data points. for instance:

0,5
0,9
1

Excel displays the chart as if the steps were even (for instance, 1,2,3). Is
there a way to force excel to recognize the actual value of the data points?
Currently it seems as if they are handled as text, not numbers.

I have confirmed that the axis type is set to match the data, and the data
is set to number.

Thank you.