One of those rare perfect sunny days in Wellington.
I spent my sunshine hours making scientific observations, which I have graphed for clarity:
Conclusions: there is a strong positive relationship between sunshine and singing. As sunshine levels increase, singing levels increase. It is highly likely the relationship is causitive.
And now for the qualitative evidence:
This little child was doing the air guitar solo to Eye of the Tiger.
Even school children are pleasant on sunny days!
Thus I would also postulate that as sunshine levels increase, annoyance caused by school children decreases.
Fascinating. Further research is required.
(Today it is grey again. I have not yet heard any singing. I have already been annoyed by school children.)