Climate period		Air temp. (˚C)			Evap. (mm∙d⁻¹)	Surface soil temp. (˚C)		Sunshine duration (h∙d⁻¹)	Humidity (%)
		Max.	Min.	Max.-Min^♦	Evap. (mm∙d⁻¹)	0600 h	1800 h	Sunshine duration (h∙d⁻¹)	Max.	Min.
		(X₁)	(X₂)	(X₃)	(X₄)	(X₅)	(X₆)	(X₇)	(X₈)	(X₉)
0^#	Retention ratio•	−0.04	0.20	−0.31^*	−0.14	0.12	−0.20	0.01	−0.04	0.17
	No. of bolls	−0.42^**	0.02	−0.37^**	−0.59^**	−0.13	−0.36^**	−0.36^**	0.01	0.46^**
1	Retention ratio	−0.10	−0.03	−0.22	−0.21	−0.15	−0.05	−0.04	−0.02	0.23
	No. of bolls	−0.25^*	−0.01	−0.36^**	−0.63^**	−0.15	−0.30^*	−0.25^*	0.06	0.44^**
2	Retention ratio	−0.15	−0.06	−0.10	−0.15	−0.08	−0.21	−0.01	−0.04	0.12
	No. of bolls	−0.18	−0.01	−0.34^**	−0.65^**	−0.11	−0.25^*	−0.32^*	0.13	0.43^**
3	Retention ratio	−0.03	−0.01	−0.02	−0.21	−0.01	−0.17	−0.08	0.09	0.12
	No. of bolls	−0.15	−0.06	−0.30^*	−0.62^**	−0.05	−0.28^*	−0.31^*	0.14	0.33^**
4	Retention ratio	0.08	−0.02	0.07	−0.09	−0.03	−0.09	−0.10	0.05	−0.04
	No. of bolls	−0.15	−0.05	−0.28^*	−0.63^**	−0.06	−0.25^*	−0.33^**	0.15	0.32^*
5	Retention ratio	0.23	−0.03	0.12	−0.06	−0.06	−0.01	−0.11	0.01	−0.16
	No. of bolls	−0.14	−0.05	−0.25^*	−0.62^**	−0.06	−0.24^*	−0.35^**	0.15	0.31^*
6	Retention ratio	0.09	−0.08	0.12	−0.09	−0.07	−0.01	−0.09	0.00	−0.05
	No. of bolls	−0.15	−0.04	−0.22	−0.61^**	−0.08	−0.25^*	−0.34^**	0.13	0.22
7	Retention ratio	−0.03	−0.12	0.12	−0.10	−0.11	−0.01	−0.04	−0.03	0.02
	No. of bolls	−0.15	−0.02	−0.19	−0.60^**	−0.10	−0.29^*	−0.32^*	0.10	0.18
8	Retention ratio	−0.02	0.05	0.03	−0.10	−0.04	−0.03	−0.02	−0.01	0.01
	No. of bolls	−0.20	−0.03	−0.23	−0.61^**	−0.10	−0.28^*	−0.32^*	0.19	0.22
9	Retention ratio	−0.02	0.13	−0.05	−0.10	0.08	−0.05	−0.01	0.03	0.00
	No. of bolls	−0.24	−0.04	−0.29^*	−0.62^**	−0.11	−0.30^*	−0.33^**	0.13	0.27^*
10	Retention ratio	−0.04	0.12	−0.08	−0.09	0.05	0.11	−0.02	0.04	0.02
	No. of bolls	−0.27^*	−0.07	−0.30^*	−0.60^**	−0.16	−0.34^**	−0.34^**	0.11	0.26^*
11	Retention ratio	−0.07	0.10	−0.10	−0.08	0.03	0.20	−0.03	0.05	0.04
	No. of bolls	−0.30^*	−0.12	−0.30^*	−0.61^**	−0.18	−0.39^**	−0.36^**	0.10	0.27^*
12	Retention ratio	−0.11	0.09	−0.14	−0.11	0.04	0.13	−0.08	0.11	0.09
	No. of bolls	−0.32^*	−0.19	−0.26^*	−0.60^**	−0.22	−0.42^**	−0.37^**	0.09	0.27^*
13	Retention ratio	−0.14	0.09	−0.17	−0.18	0.06	−0.06	−0.14	0.16	0.12
	No. of bolls	−0.33^**	−0.26^*	−0.23	−0.59^**	−0.28^*	−0.48^**	−0.39^**	0.08	0.27^*
14	Retention ratio	−0.11	−0.04	−0.10	−0.13	−0.15	−0.05	−0.09	0.01	0.12
	No. of bolls	−0.34^**	−0.32^*	−0.21	−0.61^**	−0.32^*	−0.48^**	−0.38^**	0.06	0.27^*
15	Retention ratio	−0.08	−0.11	0.02	−0.08	−0.22	−0.05	−0.02	−0.03	0.12
	No. of bolls	−0.35^**	−0.37^**	−0.18	−0.61^**	−0.38^**	−0.48^**	−0.37^**	0.03	0.27^*