How to make a composite probability density plot?

Hi everyone,

May someone help me here ...

I have data in two columns, I am interested to make a probability density plot (hisogram along with bestfit) for 2 different parameteres (data attached here). I made a try using probability values but then I have a probelm related with the orginal x-axis.

ax1 = subplot(1,2,1); % Left subplot
histfit(ax1,a,10,'normal')
title(ax1,'Left Subplot')

ax2 = subplot(1,2,2); % Right subplot
histfit(ax2,b,10,'normal')
title(ax2,'Right Subplot')

The required results should be like attched figure ..