Thanks for the info.
I tried doing as you mentioned. Somehow, the values on X axes got reversed, i.e. now '6' on X axis got merged with '0' with on Y axis and no matter whatever i try doing it doesnot get reversed, i.e. '0' on X axis doesnot get merged with '0' on Y axis. I tried all the possible settings on Sort tab but those didn't work. I think i might be missing something here(not sure what though)
I am enclosing my resultant screenshot below.
Any idea how can i reverse the value display on X axis so that it becomes 6 <--- 0 ?