. 2018 Jan 19;9:11. doi: 10.3389/fpls.2018.00011

Table 5.

Simple linear regression with groups between the chlorophyll meter (CM) readings of different leaf layers (LLs) and the nitrogen nutrition index (NNI) by using the data acquired from experiments 1 to 4.

Parameter	Factor	t (50) value
		CM1	CM2	CM3
Slope (a)	Year	0.56^ns	0.53^ns	0.86^ns
	Cultivar	−1.31^ns	−1.82^ns	1^ns
Intercept (b)	Year	2.21^*	2.21^*	2.94^**
	Cultivar	0.55^ns	1.27^ns	−1.16^ns
P (0.05) value			2.009
P (0.01) value			2.678

CM1, CM2, and CM3 indicate the CM readings of LL1, LL2 and LL3, respectively.

Indicates significant at the 0.05 level.

^**

Indicates significant at the 0.01 level. ns indicates no significant.