I have a table of data, and two of the columns contain an amount of time. This is for an American audience; an international solution is better, but not at the expense of usability for the American audience. Said audience is fairly specific and we can assume a fair bit of contextual knowledge.
I am currently displaying the amounts of time in the
h:mm:ss format (so an hour and a half, and four seconds would be 1:30:04; five minutes would be 0:05:00). The column headings clearly indicate that these are amounts of time (specifically, "Duration" and "Delay," both of which are terms we can assume the audience understands).
Therefore, I have two questions:
Is there any time format that is clearly superior to this one for clearly displaying amounts of time in a table?
Is this format clear about what it is, without anything in the column header explaining it? I could use, e.g., "Duration (hr:min:sec)" or something, but it looks ugly and I'm not sure it's any clearer.
Ultimately, we will change these formats as requested by the client, but for the initial test they want to see what we can come up with, so “just ask them” is not a valid answer. We will get feedback, and it may include critique of the time format, but we are not at that stage yet. I just want to try to ensure our first impression is clear.