Chart: insert a fixed horizontal line

Hello
Here it is
https://www.cjoint.com/c/FGqcgbbaJbw
A few explanations:
3D graphics are not accepted on a 2-axis graph (the 2nd axis does not appear because it is aligned with the main axis to have the same scale), however, we can modify the shape in 3D format, which I have done.
To display the ISF ceiling line, you need several values (3 is sufficient to overflow the plate rectangle). The other equivalent points of the plate are set to 0. For the aesthetics of the table (I'll let you handle that), you would need to hide rows 9 and 11, but for the graph, this amounts to deleting them. To work around this issue, you just need to set these rows to a height of 0.1; this way, they appear hidden.
Best regards

Hello
Add an additional column to your table with the value 130000 throughout and incorporate it into the chart.
Regards