Means within a column and effect that lack common superscripts differ significantly (P ≤ 0.05).
1Light sources: ICD = Incandescent light (2,010 K ICD, standard), Warm-LED = Warm-LED
with 2,700 K, Cool-LED-#1 = Cool-LED-#1 with 5,000 K, Cool-LED-#2 = Cool-LED-#2 with
5,000 K