Line chart not changing the values as per distinct time offset

Hi All,

I am plotting a line chart against a field called 'Time Offset' and it is not showing the right value. Please find attached the screenshot below.

I have 'time offset' field in columns and another field called 'GearPosition Status' in rows that has string values as 'Drive', 'Park' 'Neutral' in the data source.

At '31990.031' the value is 'Park' and at '31990.019' the value is 'Neutral'. But the graph is showing two lines while it should show just one line and change the value accordingly showing only one line across all time offset values.

Any idea of how I can fix this issue? What needs to be done to achieve my use case? Any help would be much appreciated.

Thank you in advance!

I have added the workbook. Please take a look. Thanks in advance!