Click here to see the SAS code.
Click here to see the example.


This graph is pretty straightforward.
I did some internet research to find raw data & example plots,
mainly from the following pages:

Using CO2 data from:

Using Temperature data from:

I downloaded/saved their data files, and then read them into 
sas datasets (the only 'tricky' part there was telling sas 
that one file was tab-delimited, whereas the other was space-

I then combined the 2 datasets, and plotted them on the same
graph using "proc gplot" with a plot and a plot2 statement.

I use axis statements to scale both sets of data similarly,
and color & angle the axis labels, etc.


Note on graph presentation: The heavier temperature lines 160,000 BP 
to present reflect more data points for this time period, not necessarily 
greater temperature variability.

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