I was going to say to check on Flickr but for some reason the exif data isn't showing on Flickr?!?
However if you save the file from flickr and look at the properties, the data is there?
...anyway the one straight on (that looks like a clock
) was 53 seconds (F25 ISO200) and the last one with the boats on the right was only 20 seconds (F16 ISO200), I did do some at 2 mins (F32) but they must have not have been as good, although I think that was to do with the colour of the wheel, as it cycles through different colours.
In terms of post processing, I did a very little bit, but I didn't really need to, unless you were looking at them side by side you probably wouldn't notice any difference. Long exposure shots generally result in really good colours naturally anyway