I stand corrected.
A little history. Darwin was bombed and mostly flattened in 1941 by the Japanese during WWII. And, most likely, the weather station with it.
Hence, it was probably re-built at a different site with different local effects.
Next?
It doesn't surprise me. Whilst many substances are unsafe at any dosage (e.g. mercury), some things are downright deadly in large quantities.
Like Paracetamol. http://en.wikipedia.org/wiki/Paracetamol_toxicity Apparently, it's one of the worst ways to die.
And warafin, an excellent anti-blood clotting agent is also used as rat poison.
DON"T OPEN A POWER SUPPLY UNLESS YOU KNOW THE LARGE CAPACITORS INSIDE ARE DISCHARGED - THEY CAN MAKE YOUR ARM MUSCLES CONTRACT HARD ENOUGH TO BREAK YOUR BONES. .
Only if you're in a 110V country like the USA.
In Australia/UK/EU where it's 230-250V, a stuff-up can mean DEATH.
No, really - 240V will kill you. If you're lucky, you might only get scorched nerves.
I tell them to turn to the study of mathematics, for it is only there that they might escape the lusts of the flesh. -- Thomas Mann, "The Magic Mountain"