Nicotine

Total sugar

chlorine

Potassium

Total nitrogen

Sugar-base ratio

Nitrogen to alkali ratio

Potassium Chlorine Ratio

May

average temperature (˚C)

0.27

−0.01

0.05

0.74*

0.11

−0.17

−0.17

0.24

rainfall (mm)

−0.64*

0.25

0

−0.17

−0.34

0.48

0.41

−0.02

Sunshine hours (h)

0.37

−0.22

−0.05

0.23

0.34

−0.25

−0.14

0.17

June

average temperature (˚C)

0.33

−0.09

0.1

0.66*

0.29

−0.21

−0.13

0.19

rainfall (mm)

−0.52*

0.02

−0.05

−0.32

−0.34

0.26

0.32

−0.1

Sunshine hours (h)

0.24

−0.16

−0.16

0.22

0.31

−0.13

−0.03

0.29

July

average temperature (˚C)

0.3

−0.14

0.11

0.68*

0.18

−0.21

−0.16

0.19

rainfall (mm)

−0.59*

0.62*

−0.28

−0.21

−0.12

0.65*

0.55*

0.19

Sunshine hours (h)

0.39

0.08

−0.29

0.58*

0.24

−0.11

−0.22

0.4

August

average temperature (˚C)

0.16

−0.02

0.05

0.78*

0.11

−0.06

−0.07

0.27

rainfall (mm)

0.12

0.17

0.13

−0.33

0.05

−0.11

−0.08

−0.3

Sunshine hours (h)

0.29

0.05

−0.2

0.33

0.01

−0.1

−0.3

0.22

September

average temperature (˚C)

0.08

0.01

−0.02

0.78*

0

0.01

−0.04

0.32

rainfall (mm)

−0.77*

0.23

−0.19

−0.34

−0.16

0.59*

0.70*

0.16

Sunshine hours (h)

0.68*

−0.12

0.02

0.16

0.54*

−0.42

−0.39

−0.04