Stun times are heavily linked to underlying storage performance and that of the hypervisor as well, so unless you have some of that other data and have attempted some correlation, just a table of those times isn't enough to go on. And on that point, it would be better if you could paste that text in-line to your response (VMTN has an insert table feature). It's generally not safe for strangers on the Interwebs to be opening MS Office documents from other strangers.
I would begin by looking at your Compellent array and correlate the stun times with those metrics to see if you're getting a spike at the storage layer or what that storage says at all.