A Comparison of Thermal Growing Season Indices for the Northern China during 1961–2015

Table 3

Correlation coefficients for combinations of the end indices of growing season. Single bold values show the mean coefficients over northern China, and the paired values below show the minimum (left) and maximum (right) coefficients.

End of GS	>5 d < 5°C (EI 2)			10 d < 5°C (EI 3)			Fr OR = 5 d < 5°C (EI 4)			Fr OR > 5 d < 5°C (EI 5)
=5 d < 5°C (EI 1)		0.82			0.71			0.87			0.74
	0.39		0.99	0.36		0.96	0.37		1.00	0.23		0.99
>5 d < 5°C (EI 2)		—			0.63			0.71			0.81
				0.25		0.94	0.25		0.99	0.31		1.00
10 d < 5°C (EI 3)		—			—			0.73			0.69
							0.23		0.96	0.21		0.94
Fr OR = 5 d < 5°C (EI 4)		—			—			—			0.88
										0.55		1.00