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Meteorological condition during measurements performed in Gdynia (17.XII.2007–17.XII.2008)
| Variable | Average | Min. | Max. |
|---|---|---|---|
| Air temperature (°C) | 10.6 | −4.3 | 23.1 |
| Wind speed (m·s−1) | 2.2 | 0.0 | 5.1 |
| Amount of precipitation (mm) | 5.2 | 0.0 | 92.5 |
| Relative humidity (%) | 71.8 | 45.1 | 93.4 |
| Atmospheric pressure (mbar) | 1,009 | 981 | 1,034 |
