Showing two informations in tree node

In my web application I have a tree with each node holding two status.

Nodes are circles linked with each other.

The status can be either OK, KO, or PARTIAL.

The first status is the "technical status" of the node. The second status is the "functional status".

The functional status of the node is dependant of its technical status.

I need a way to show the two status (OK/KO/PARTIAL) in a way that users can quickly identify which nodes are in KO or PARTIAL functional or technical status.