I was out a few days in January. I'm right on the 4kWh line. Or maybe slightly below, so I voted 3-4.
cool chart. I couldn't understand it at first since the y axis is not readily apparent as to quantity, but then I got it.
I also was out recently and ended up experimenting a bit. The first time, I ended up where I knew I'd be roughly at the 3.6 kWh level. The next time I unplugged a few small things that I've been thinking would help. It got me down to about 2.5. This table shows it (ignoring the couple of days of slightly higher usage when I was there for part of the day).

I think it would be down around 2.2 or so if I were not leaving a light on for security.
Things that made a difference included:
- turning off circuits at the breaker panel: garage, HVAC, dishwasher
- unplugging 5 cordless phones
- turning off shower hot water recirculator (generally off anyway, but sometimes I forget).
- unplugging a couple of alarm clocks.
- turning off surge protector on one or two other things.
- unplugging one or two smaller UPS.
- turned off all internet related. I guess I'd leave it on if I could figure out how to access ted5000 remotely, but I find it too difficult and so have not tried recently.
I should have but didn't unplug the TED5000 display. This would have saved a slight amount each day.
A negative is that I need to turn on the vacation function on the solar hot water heater which I think then uses more electricity over time by recirculating the liquid to the roof at night so it will cool off and not build up too much heat or pressure.
There are other negatives to this strategy in terms of inconvenience or other. I turned back on the HVAC circuit but did not wait 24 hours, instead I waited only about 9, so I hope that I didn't damage it.
In theory the overall use can go as low as maybe 55 Watts (although unfortunately I don't remember the number with certainty) but it seems to have been averaging more around 100 Watts. I'm not sure about explaining all of the difference, though I guess it is largely or entirely things that cycle (eg: the refrigerator, the solar hot water heater motor on vacation mode).
I don't think I can change my vote on my poll, but I guess eventually I should change it to 2-3.