I was there a little over a week ago. Two point seven five on a scale of ten but I've worked in both Canada and Alaska.
I'm type "O" blood and warm skinned. If anyone in your group is likewise they will suffer somewhat. Deet was required for me but it is not like every second is swatting at them.
I recommend when you retreat to the tent that you do a purge of vermin, that is, zip up and seek them our with your flashlight and kill without mercy, otherwise, they will do the same. Especially get the nasty gnats at the top of the tent.