Dear All, 

It can be done by using the surfdata, see attached.

Thanks.

Very kind wishes,

Wang Zhesurfdata.mw

Dear all, 

I have found a solution to the question, see attached.

Nevertheless, could anyone please point me out what does the scales on the y-axis mean?

Histogram_and_Kernel_density_plot.mw

Thank you.

Very kind wishes,

Wang Zhe