[Izzy Dunne]

I’d like to see the thermometer that measures the temperature on the entire earth at a precision of hundredths of a degree.

I'm not worried about that. When dealing with averages, you can easily get resolutions of 0.01 degree.

Either the paper posted it wrongly, and then updated the website (without giving it a new update date), or Sub-Driver changed the figure in posting it here.

I'm inclined to favor the former explanation, but we need to deal in facts.

[ApplegateRanch]

When dealing with averages, you can easily get resolutions of 0.01 degree.

Uhhm, no; you can't. You can get a calculated value in hundredths of a degree, but you can not get a greater resolution than you started with.

Least significant figures, and all that still applies, so your average is only resolved to as few figures as your least precise measurements allow for, no matter how many places you can divide out to.