TABLE 3.

Summary of meteorological data collected during 4 periods (P1-P4) from 1st January to 30th August in different Turkish provinces (Düzce, Giresun, Ordu, Sakarya, Samsun, Trabzon, and Zonguldak) in 2017.

	Start date	End date	Mean air temperature (Tm,°C)	Degree Day (DD,°C)	Summation Degree Day (ΣDD,°C)	Total rainfall (R, mm)	Summation rainfall (ΣR, mm)	Mean air relative humidity (RHm,%)
Düzce
P1	1-Jan	30-Apr	7.1	858	858	282	282	81
P2	1-May	30-June	17.3	1068	1926	168	450	87
P3	1-July	31-July	22.2	690	2616	37	487	84
P4	1-Aug	31-Aug	22.6	700	3316	39	526	86
Giresun
P1	1-Jan	30-Apr	7.4	888	888	70	70	70
P2	1-May	30-June	16.3	997	1885	155	225	84
P3	1-July	31-July	21.0	652	2538	239	463	84
P4	1-Aug	31-Aug	21.6	671	3209	330	793	91
Ordu
P1	1-Jan	30-Apr	7.4	888	888	250	250	69
P2	1-May	30-June	16.4	999	1887	99	349	82
P3	1-July	31-July	21.1	655	2542	8	357	81
P4	1-Aug	31-Aug	21.9	680	3223	33	390	88
Sakarya
P1	1-Jan	30-Apr	5.8	691	691	210	210	82
P2	1-May	30-June	16.3	994	1685	164	374	86
P3	1-July	31-July	20.6	638	2323	85	459	86
P4	1-Aug	31-Aug	20.8	645	2968	54	513	88
Samsun
P1	1-Jan	30-Apr	6.2	747	747	206	206	70
P2	1-May	30-June	15.3	934	1682	167	373	84
P3	1-July	31-July	20.4	632	2314	16	389	82
P4	1-Aug	31-Aug	20.5	636	2949	53	443	90
Trabzon
P1	1-Jan	30-Apr	8.7	1041	1041	273	273	72
P2	1-May	30-June	17.6	1075	2116	190	462	84
P3	1-July	31-July	23.3	723	2839	33	495	80
P4	1-Aug	31-Aug	24.6	763	3602	123	618	85
Zonguldak
P1	1-Jan	30-Apr	7.4	883	883	155	155	75
P2	1-May	30-June	17.7	1077	1961	3	158	82
P3	1-July	31-July	22.1	686	2647	29	187	80
P4	1-Aug	31-Aug	22.0	682	3329	103	290	83