Table 1.

Environmental conditions during the short-term litter storage trials as provided by the weather station closest to the trial site (German meteorological office).

Trial	Day	Daily air temperature (°C)			RH (%)1	Sunshine (h)	Rainfall (mm)
		Minimum	Maximum	Mean
Winter	1	−13.1 °C	−2.0 °C	−7.2 °C	58.8%	9.5 h	0.0 mm
	2	−12.8 °C	−0.6 °C	−6.1 °C	56.5%	9.4 h	0.0 mm
	3	−7.7 °C	7.4 °C	−0.5 °C	54.7%	5.1 h	1.1 mm
	4	−3.8 °C	11.9 °C	4.4 °C	74.5%	7.9 h	0.0 mm
	5	−5.5 °C	5.2 °C	1.0 °C	82.6%	0.9 h	6.9 mm
Summer	1	13.6 °C	28.8 °C	21.6 °C	75.6%	10.0 h	20.4 mm
	2	13.6 °C	30.4 °C	23.5 °C	69.9%	12.3 h	0.0 mm
	3	14.9 °C	27.0 °C	21.6 °C	78.8%	6.5 h	0.2 mm
	4	14.4 °C	21.5 °C	19.2 °C	86.1%	0.3 h	0.1 mm
	5	13.7 °C	25.2 °C	20.5 °C	76.0%	5.4 h	0.0 mm

¹Relative humidity.