Now that IJIS/JAXA is back, replete with three days of missing data, I have to agree that the day-to-day numbers seem--to me questionable. That is, in the seven days prior to the dropout (28 May - 04 Jun), IJIS extent dropped by an average of 63,400k km2 per day, with two century breaks in a row right at the end. But then over the next five days (Jun 05 - Jun 09), extent dropped by just 82k in total, a daily average of 16k km2--and that was followed by yesterday's jumbo drop of 212k.
Normally, that wouldn't be a big deal. But an even more suspect thing happened back in the early part of the year that has me wondering. To wit:
Over the two weeks prior to 24 Jan, IJIS extent had grown by an average of about 50k per day. On the 24th, it suddenly decreased by 91k. Data from the 25th is missing. On 26 Jan, data returned, this time showing a massive two-day growth total of 327k--after which it fell back into the routine of growing by a few tens of thousands each day.
Bottom line, and as Peter Ellis just wrote, I'd take the IJIS numbers around a data dropout with a huge grain of salt...