Hi Dan,
Sure thing, see the attached sheet. The colored dots you see are the volume that showed up at the given times. I use several colors so that I don't have to print out a sheet for each bar. I don't remember what time this was done at, so I don't have a reference for you to compare to - sorry.
Often I don't mark the volume in the exact position it should be, but guesstimate. At this stage of the game, I am only interested in fast paced markets, so anything 10k and below I just note - except DU volume.
I have a little timer program that beeps every 30 seconds. It's not terribly accurate, as I need to resynchronize it every so often, but it does the job for now.
As you can see, the bar where I was using green started off in DU land (well below 250 volume), at the 30s mark. Then it jumped up to 1200 by 1 minute, and at 1.5 minutes, it was at roughly 1800.
It's pretty easy to mark off when I am not in a trade. Things get a bit more tense when you throw in the pucker factor of having a trade on. I have caught myself not updating the sheet - so I need to improve my monitoring skills when I am in a trade, for certain.
Oh - I do this a bit differently than suggested by Jack because, again, I'm focusing on fast markets only. As I get better with this, I'll adopt more of what he posted earlier. That and I need to get some colored pens so my kids can get their markers back.
HTH
Anthony