How can you tell it wasn't something else?

I wondered about that as well. The curves match closely to data released by others, including government agencies and random people on the internet showing data from their weather stations. There are few things that can have this signature, and there was no news broadcasts about North Korea testing another bomb.

Like a slammed door

I live in a small house, not the VAB at KSC ;-)

or a farting dog nearby?

The event lasted over 3 hours with a relatively high pressure change. The amount of methane released during a fart like this would have meant that both Greenpeace and the Guinness world record people would have been banging on my door at the same time. ;-)

Dog not pictured just out of frame . . .

I've got one of the simpler models of the Enviro+ (mine's just the plain "Enviro") but it's got the pressure sensor mentioned as well as a gas detector which might be suitable for tracking canine methane emissions. I don't have things automagically running and mine's indoors so I don't have any cool data to share but I've been happy with mine if anyone's looking for similar hardware.

The cake is a lie.
The cake is a lie.
The cake is a lie.

> The amount of methane released during a fart

However unlikely, better avoid lighting matches around certain dogs.

Cheers Rolf
_{(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery}

"Triangulations of pets is certainly promising tho..."

Although, the pets would need to have bad guts for this to be useful. :-)

Although, the pets would need to have bad guts for this to be useful. :-)

Have you met my dog on a bad day then???

"Have you met my dog on a bad day then???"

I haven't but my sister, who lives not too far from Coventry, has from time to time mentioned certain odiferous disturbances in the area — perhaps she's met your dog; at least in the olfactory sense. :-)

— Ken

well ... I can only tell that my flatmate loved her old dog and I desperately needed that room when I started studying in a new town.

Cheers Rolf
_{(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery}