I have to plot multiple y values for single x value, but in the plot all the values related to x=x1 appears on the same column. The relative y values are related to the same day (x) but to subsequent times. I would like to plot y values related to the same x in different columns just labeling the first value of x. It is possible? Thank you The graph that i found is the following but i don't know how to solve the problem.