Horizontal bar graph

I have a query to my (postgres) database in which I can receive status for some of my systems for a certain time interval. I can get a table like this:

 site  |  ok  | warning | critical
-------+------+---------+----------
 arb2  | 0.00 |    0.00 |     1.00
 hfa2  | 0.00 |    0.00 |     1.00
 nc204 | 0.00 |    0.00 |     1.00
 nc205 | 0.00 |    0.00 |     1.00
 nra2  | 0.00 |    0.00 |     1.00
 nc202 | 0.00 |    0.33 |     0.67

and so on…

I would like to show this as a horizontal stacked bar graph - if that is possible. I have found and installed the multistat plugin and I can make a horizontal bar graph of either of my parameters (ok, warning, critical) but can I get a stacked graph?

This is a quick and dirty example of what I want made in Excel (although Excel for some reason turns my data set upside down, I want the rows with the highest values for “critical” plotted on the top as my query returns it)