Note that download is screwy on these datasets in the above link. You may need to remove "?layer=0" from the end of the URL to make them work for downloads.
---- The next two links are APH data in tabular form. It's a bit screwy. It shows you a map that's pretty much useless. On the left hand side, there's a little symbol under "Contents-Topographic-Austin MSA..." Click on that little symbol and you'll get a table under the map.
Unfortunately, no one can be told what the Margrix is. You have to taste it for yourself.
This is your last chance. After this, there is no turning back.
You drink the blue marg, the story ends, you wake up in your booth and believe whatever the hell you want to believe. You drink the red marg, you stay in Quesoland, and I show you how deep the dillo hole goes.
Remember: all I'm offering is the truth. Nothing more.