The winter of 1990–91 in Cluj: 20 of 63 nights with warmer air above than below
In the winter of 1990–91, Băișoara (1,356 m) was warmer than the Cluj weather station on 20 of the 63 nights measured. Largest gap: 27 December 1990, −9.9 °C below and −0.4 °C above.