Table 2: The results of generalized estimating equations assessing the development of densities based on several light environments over the time.

Response Variable	Parameter	Estimate	Standard Error	P-Value
S1	(Intercept)	1.912
	Light Env.
	White	-0.002	0.057	0.969
	Yellow	0.081	0.052	0.119
	Natural	0.101	0.071	0.157
	Dark room
	Time	-0.068	0.011	<0.001
	White* Time	0.009	0.005	0.108
	Yellow* Time	-0.012	0.013	0.401
	Natural* Time	0.001	0.012	0.913
	Dark*Time
S2	(Intercept)	1.632	0.014	<0.001
	Light Env.
	White	0.026	0.051	0.618
	Yellow	0.182	0.050	<0.001
	Natural	0.210	0.093	0.024
	Dark room
	Time	-0.040	0.009	<0.001
	White* Time	-0.004	0.004	0.347
	Yellow* Time	-0.036	0.015	0.018
	Natural* Time	-0.027	0.016	0.086
	Dark*Time
S3	(Intercept)	1.207	0.014	<0.001
	Light Env.
	White	0.003	0.019	0.886
	Yellow	-0.007	0.037	0.857
	Natural	0.079	0.031	0.012
	Dark room
	Time	-0.047	0.005	<0.001
	White* Time	0.004	0.009	0.714
	Yellow* Time	0.001	0.007	0.857
	Natural* Time	0.004	0.004	0.427
	Dark*Time