Table 1.

Meteorological conditions during harvest time in Olszowiec region based on climate monitoring bulletin Polish.

Sample Name	The Average Air Temperature (°)	Max Snow Depth (cm)	Max Running Time with Snow Cover (days)	The Number of Days with Snow (days)	Monthly Total Precipitation (mm)	Sunshine Duration (h)
February’16	−6.1	17	24	27	20	70–80
March’16	5.9	-	-	-	30–40	150–160
April’16	9.3	2	-	1	30–40	180–190
May’16	15.1	-	-	-	30–40	280–300
June’16	16.8	-	-	-	80–90	210–220
July’16	20.3	-	-	-	50–60	280–300
August’16	18.7	-	-	-	50–60	220–240
September’16	14.5	-	-	-	30–40	170–180
September/October’16	11.4	-	-	-	60–70	150–160
October’16	8.2	-	-	-	80–90	120–130
November’16	5.6	-	-	-	20–30	30–40
December’16	−2.5	14	29	30	20–30	20–30
January’17	−3.1	29	22	23	50–60	20–30
February’17	−0.5	25	28	20	40–50	0–20
March’17	−1.8	20	24	26	50–60	110–120
April’17	8.2	27	11	11	40–50	150–160
Winter 2016	−1.3	17	42	53	100–125	150–160
Winter 2017	−2	29	50	81	100–125	70–80