Yeah the interactive graph uses the 5 day mean....it's updated daily, so its a daily reading, but the data is a 5 day average. The single day reading is actually 4.56 million sq km today. Like I said before, I can't remember if they use that or the 1 day reading as the min...but looking back at past mins, I think they use the 5-day reading that's on the graph. I seem to remember them explaining that the single day jumps can be a bit volatile and produce faux numbers on the margins, so they prefer to smooth it out. JAXA actually does this too but they do it over a 2 day average. We'll know soon enough. Not that there is a big difference...