TABLE 6.

The robustness tests of 3D light-time-biomass response model of choy sum seedling.

Model	Region	Variable	Parameters			ANOVA		Statistics
			Coefficient	t-value	Prob > | t|	F value	Prob > F	aAdj. R2	bRSS	cRMSE
3D light-time-biomass response model	1	Light-intensity-based model (This model)	dDW0	106.956	0	4,311*	0*	0.993	32.638*	16.3*
			eDWmax	23.890	0
			tm/4	91.392	0
			k3	26.096	0
			Im/4	45.129	0
			k4	26.046	0
	1	Light-energy-based model	DW0	4.408	2.165 × 10–5	4,5945	0	0.999	3.048	1.7
			DWmax	74.910	0
			tm/4	300.990	0
			k3	85.139	0
			Em/4	135.652	0
			k4	83.642	0
	2	Light-intensity-based model (This model)	fDWc	15.006	5.517 × 10–6	1,113*	1.9 × 10–8*	0.850	184.831*	42.8*
			k5	5.491	1.530 × 10–3
			k6	-4.157	5.970 × 10–3
	2	Light-energy-based model	DWc	15.974	3.822 × 10–6	1,278	1.3 × 10–8	0.899	161.048	12.7
			k5	5.893	1.060 × 10–3
			k6	-4.306	5.060 × 10–3

^aAdj., adjusted.

^bRSS, residual sum of squares.

^cRMSE, root mean square error.

^dDW₀, dry weight of choy sum seed portion that will be developed into the seedling.

^eDW_max, the maximal dry weight achieved.

^fDW_c, the coordinated dry weight in Region 2. RMSE unit for 3D light-time-biomass response model is “mg/seedling.” *Indicated that the data were also shown in Table 2 and Figure 2F for comparison.