condition	mean	min	max
4 h after light	3.260915	3.19058	3.33125
8 h after light	2.8668	2.70763	3.02597
12 h after light	2.659315	2.51373	2.8049
4 h after dark	4.41021	4.13859	4.63224
8 h after dark	4.02612	3.71854	4.4312
12 h after dark	3.88925	3.48851	4.25266