How to keep time (Not tic toc)

I have data that was taken at a time, I want to use the times to create time series plots and other such charts and graphs. With this data I am finding the mean, variance and correlation coefficient, This gives out puts that show no indication of the time they where taken at. How can I keep the time tied to the out puts to make it easier to graph later?

[Azzi Abdelmalek]

Can you explain how are you getting your data?

[Ry]

I receive the data from an online storage area. From there I bring it to my computer and import it into MATLAB. I can see the time in a column to the far left, and the readings I am interested in, on the far right. To define a variable I high light the entire row and analyze it in 30 data point increments. (Sorry for the late response, I did not receive an email for a comment).

[Star Strider]

Posting a few (10 or so) representative lines of your data, what you are now doing with it, and what you want to do with it would help.

Answer 1

[Sean de Wolski]

Convert the times to date numbers:

doc datenum