The whole stats system needs an overhaul to be honest. At the moment we are only collecting data on cumulative totals for site ID’s for example so it’s not possible to break it down to last 7 days for site x for example. It’s quite a big job to do it well as we will be storing a lot of data and aggregating it into hopefully not too slow reports. This isn’t going to happen until after the ICO/Exchange listing.
Export to CSV might be a quick work around which I’ll have a look at today.