In article
,
Colin Youngs writes:
Brussels Uccle 6.0°C - overnight minimum -1.1°C.
Brussels Airport 3.3°C - overnight minimum -0.9°C.

That's a big difference in maxima over a shortish distance. Any idea of
the likely cause?
--
John Hall
"Honest criticism is hard to take,
particularly from a relative, a friend,
an acquaintance, or a stranger." Franklin P Jones