Don't you hate that? That's what my first compression test went like, I tested them 4321 and got 155, 155, 155, then as I thought "whew, my engine is in great shape" I tested 110 on cyl 1. It's like "dammit cylinder, why can't you be like your buddies and have good compression? You just have to be a troublemaker!"
No, I did not actually shout at cylinder 1.