It was a small enough group that I won't share data, but I'll tell you mine (which is pretty similar to my co-founders, except Joe, who is an ANIMAL of productivity).
I have a "webdev" tag (which includes design and coding) that peaked at 7 hours, but typically is 3-4.5.
I have a "work" tag (which includes all webdev stuff AND work email-- customer support and fundraising mostly), which peaked at 10h 40m, but typically was more like 5-7.
About 10% of my time is untagged, which is probably split between 1-visit goofy sites and obscure CSS documentation, so you can round up the above numbers a touch.
Oh, and 27% of my time is spent on SOME Google App (gmail for domains, search, analytics, docs, reader). Google owns my ass. :-)