I spend some time first thinking about what I want to write and with a paper and pencil do some pseudo code, data model, etc. so when it comes to writing the code, for the most part the buddle-neck becomes my typing speed and syntax error. So in a day I loose about 1 hour planning, 2 hours looking out the window, 2 hours of rethinking and stuff, and about 5 hours typing. and about 3 hours rewrting and making things smaller...

if I don't plan (and sometimes I don't because I get lazy) my productivity drops to about 3 hours worth of typing.

oh and I code in java.

Of course there are days when I do really poor job and days when I even surprise myself.

Lines of code is not important at all elegant and reusable code is.