Table 1 Meteorological conditions during field surveys at the Old Town of Warsaw
Season | Air temperature (°C) | Global solar radiation (W·m−2) | Relative humidity (%) | Wind speed (m·s−1) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Average | SD | min | max | Average | SD | min | max | Average | SD | Average | SD | |
Spring | 14.3 | 1.5 | 11.5 | 17.3 | 450.4 | 246.7 | 80.6 | 865.6 | 50 | 6 | 0.8 | 0.4 |
Summer | 27.1 | 1.2 | 25.1 | 30.0 | 682.6 | 213.2 | 90.6 | 901.9 | 37 | 7 | 0.7 | 0.3 |
Autumn | 9.8 | 0.7 | 8.5 | 11.8 | 137.6 | 120.6 | 14.4 | 569.4 | 69 | 10 | 0.7 | 0.4 |
Winter | −2.9 | 1.4 | -6.7 | -1.3 | 223.6 | 147.3 | 33.1 | 453.1 | 67 | 11 | 0.7 | 0.3 |