yes if you read that link it will explain(self inflicted by cheap ebay test kit).
in your video it doesnt look too bad, as you accelerate then back off the values all drop pretty low, then number 3 creeps up and 2 and 4 try to balance it out, if you add all the +'s and the -'s you should be around 0. if it was 2 or 4 surely it would adjust number 1 to try to balance more, least thats how i see it.
id forget about it for now, bung some injector cleaner in now, top up your tank and then check again on thursday when your home.