Well, the biggie is that DS slept thru the night for about 3 months. Around 5am, I'd wake up huge and engorged, so I'd pump, at least 4 oz. That all went in the freezer. Then, when I'm working, I'd pump, and I'd nearly always pump more than DS would take, so that'd go in the freezer. I was pumping a lot, 9-10 oz was normal for a single pumping session.
I'd also pump if we were out running errands all day, and he refused to nurse(he usually does when we're errand running) so that'd be another 4-6 ounces.